— terms
Terms & Conditions
Last updated: 27 May 2026
These terms of use apply when you use the Signal Layer service available at signal-layer.ai (“Signal Layer”, “the Service”, “Services”) provided by Myfour Ltd (“we”, “us”, “our”), a company registered in England and Wales with company number 09939423 and registered office at 11 Brantwood Road, London, SE24 0DH, trading as Threekey. The Signal Layer service includes the software, tools, web interfaces, integrations, data, communications, documentation and websites related to Signal Layer.
By registering for an account, accessing or using Signal Layer, you agree to be bound by these Terms. If you do not agree, you must not use the Service.
1. Accessing our Services
You must provide accurate and complete information to register for an account. You must not make your access credentials or account available to others, and you are responsible for all activities that occur using your credentials.
You must have the authority to register and accept these Terms on behalf of the business, organisation or entity that you belong to and register against (“Organisation”).
If you choose, or you are provided with, a user identification code, password, or any other piece of information as part of our security procedures, you must treat such information as confidential, and you must not disclose it to any third party.
We have the right to disable and delete any user account and all data linked to it, whether chosen by you or allocated by us, at any time if in our opinion you have failed to comply with any of the provisions of these Terms or if we believe there is or may be a security breach. We also reserve the right to recover any losses we suffer as a direct result of your breach of these Terms.
Access to the Service is permitted on a temporary basis. We will not be liable if for any reason the Service is unavailable at any time or for any period. From time to time, we may restrict access to the Service to users, including those who have registered with us.
2. Inputs and Content
We use a range of technologies, including artificial intelligence and machine learning, to process information you submit or authorise us to access (“Input Information”) and to generate output content for you and your Organisation (“Content”).
Input Information falls into two categories:
- Publicly available information about your Organisation, including information from your Organisation's websites and from publicly accessible registers, sources and databases; and
- Other systems, content and data sources that you, or someone else in your Organisation, provide to us directly, or authorise us to access (including via integrations, file uploads or API connections).
You give consent for us to collect, store and process Input Information in order to provide the Service.
You are responsible for the Input Information you provide, including for ensuring that:
- it does not violate any applicable law or these Terms;
- you have the necessary rights, permissions and lawful bases to provide it to us; and
- it does not infringe the intellectual property, privacy or other rights of any third party.
You understand and acknowledge that Content generated by Signal Layer may be inaccurate, incomplete or otherwise unsuitable for your intended purpose. AI-generated outputs can contain errors, omissions or fabricated information. You should always review the Content and validate the results before relying on or using them, and you remain solely responsible for any decisions made or actions taken on the basis of the Content.
You must not represent that Content generated by Signal Layer was human-generated when it is not, where such representation would be misleading, deceptive or in breach of applicable law (including consumer protection, advertising or disclosure rules).
Subject to your compliance with these Terms, you own the Content generated specifically for you, save that we retain ownership of, and all rights in, the underlying Service, models, software, methodologies and any improvements, learnings or aggregated insights derived from your use of the Service (provided these do not identify you or your Organisation).
3. Data Retention and Deletion
We will retain all Input Information and any Content generated for you (together, “Customer Data”) for at least 12 months from the later of:
- the date we last generated any Content for you; or
- the date any fixed-term subscription, bulk-purchase arrangement or other time-bound contract with you ends,
(the “Retention Period”).
After the Retention Period we may securely delete or irreversibly anonymise the Customer Data, unless we are required to keep it for longer by law.
Deletion on request. You may instruct us at any time to delete some or all Customer Data by emailing hello@signal-layer.ai (or via any in-product mechanism we provide). We will carry out the deletion within 30 days of successfully verifying the request, unless legal or regulatory obligations require us to keep the data for longer.
Deletion does not apply to system backups or audit logs that we must retain for security, tax or compliance purposes; these are held securely and erased on their normal lifecycle.
4. Prohibited Uses
You may use the Service only for lawful purposes. You may not use the Service:
- In any way that breaches any applicable local, national or international law or regulation;
- In any way that is unlawful or fraudulent, or has any unlawful or fraudulent purpose or effect;
- For the purpose of harming or attempting to harm any other persons in any way;
- To generate, distribute or facilitate content that is defamatory, harassing, discriminatory, obscene or otherwise unlawful;
- To knowingly transmit any data, send or upload any material that contains viruses, Trojan horses, worms, time-bombs, keystroke loggers, spyware, adware or any other harmful programs or similar computer code designed to adversely affect the operation of any computer software or hardware;
- To develop, train or improve any competing artificial intelligence model, large language model, machine learning system or substantially similar service, whether by extracting outputs, reverse engineering, or otherwise.
You also agree:
- Not to reproduce, duplicate, copy or re-sell any part of the Service in contravention of these Terms;
- Not to access without authority, interfere with, damage or disrupt: any part of the Service; any equipment or network on which the Service is stored; any software used in the provision of the Service; or any equipment, network or software owned or used by any third party;
- Not to attempt to bypass, disable or circumvent any rate limits, security features, authentication mechanisms or usage restrictions of the Service;
- Not to scrape, crawl, or otherwise systematically extract data from the Service other than through interfaces we expressly provide for that purpose.
5. Fees and Payments
Unless otherwise stated, Fees are payable in advance for the relevant subscription period, service period, bundle, package or other paid access period. Access to the Service is conditional on payment being received in cleared funds.
You will pay all fees charged to your account (“Fees”) according to the prices and terms shown on the applicable pricing page, order page, subscription page, invoice or other written agreement between you and us.
You must provide complete and accurate billing information, including a valid and authorised payment method for your Organisation. You authorise Myfour Ltd, our affiliates and our third-party payment processor(s) to charge your payment method for the Fees and any applicable VAT or other taxes.
If you pay by card or another online payment method, payment must be completed before the start of the relevant paid access period. If payment is not completed, or if your payment method is declined, expires, is cancelled or cannot be processed, we may immediately suspend, restrict or withhold access to the Service until payment is received.
Where we agree to payment by invoice, bank transfer, cheque or another offline payment method, payment must be received in cleared funds within 5 working days of the invoice date, unless we agree a different payment period in writing. If cleared funds have not been received by the end of that period, we will send you one written reminder, and if cleared funds have still not been received within 2 working days after that reminder, we may pause, suspend or terminate access to the Service without further liability to you. We are not required to provide or continue access to the Service during any period in which payment remains outstanding. In this clause 5, “working day” means any day other than a Saturday, Sunday or public holiday in England and Wales, and where you pay by cheque payment is treated as received only once the cheque has cleared into our account.
Where a fixed-term subscription, monthly subscription, annual subscription, trial period, bulk-purchase arrangement or other time-bound access period ends, continued access is conditional on renewal and payment of the applicable Fees. If payment for the next access period has not been received by the end of the current paid period, access to the Service may cease automatically at the end of that paid period. For example, if a paid access period ends on 30 April and payment for renewal has not been received, access may be disabled from 1 May.
Payments are non-refundable except as expressly stated in these Terms or as required by applicable law. Cancellation, non-use or suspension of the Service does not entitle you to a refund for any period already paid for.
We may change our prices by notifying you and/or updating our website. Any price changes will apply from the effective date stated in the notice or on the website, save that price changes affecting an existing fixed-term subscription will take effect at the start of the next renewal term.
We have the right to correct pricing errors or mistakes even if we have already issued an invoice or received payment.
All Fees are exclusive of VAT and any other applicable taxes, duties, levies or charges, which will be payable in addition at the prevailing rate, where applicable.
Unless otherwise agreed in writing, Fees are payable in pounds sterling. If we agree to accept payment in another currency, or if your bank, card issuer or payment provider applies currency conversion, transaction fees, bank charges or other payment charges, you are responsible for those charges. We must receive the full amount invoiced, net of any such deductions or charges.
If you are required by law to deduct or withhold any tax or other amount from a payment to us, you must pay any additional amount necessary to ensure that we receive the full amount we would have received had no deduction or withholding been required.
If you want to dispute any Fees, you must contact hello@signal-layer.ai within 30 days of the date of the relevant invoice or charge. You must explain the reason for the dispute in reasonable detail. You must pay all undisputed amounts on time. A billing dispute does not entitle you to continue using the Service without paying any renewal fees or other undisputed sums due.
If any amount is overdue, we may charge statutory interest and fixed-sum compensation in accordance with the Late Payment of Commercial Debts (Interest) Act 1998 and recover our reasonable costs of collection.
If access to the Service is suspended or disabled because of non-payment, we may require payment of all outstanding sums, payment in advance for the next subscription period, and/or a reasonable reactivation fee before restoring access.
6. Data Protection and Privacy
Both parties will comply with their respective obligations under applicable data protection laws, including the UK General Data Protection Regulation, the Data Protection Act 2018, and (where applicable) the EU General Data Protection Regulation (Regulation (EU) 2016/679) (together, “Data Protection Laws”).
In providing the Service, we act in two capacities:
- Controller: We act as a data controller when we process personal data for our own business purposes, including account administration, billing, communications about the Service, fraud prevention, security, service improvement and compliance with our legal obligations. Our processing in this capacity is described in our Privacy Policy.
- Processor: We act as a data processor when we process personal data contained in Input Information or Content on behalf of your Organisation. In that case, your Organisation is the data controller and we process the personal data only on your documented instructions, save where required to do otherwise by law.
Where we act as a processor, we will:
- ensure that persons authorised to process the personal data are subject to appropriate confidentiality obligations;
- implement appropriate technical and organisational security measures;
- only engage sub-processors in accordance with our published sub-processor arrangements, and impose equivalent data protection obligations on those sub-processors;
- assist you, taking into account the nature of the processing, to respond to data subject requests and to meet your obligations under Data Protection Laws;
- notify you without undue delay on becoming aware of a personal data breach affecting your Customer Data; and
- at your choice, delete or return the personal data at the end of the provision of the Service, subject to clause 3.
Further information on how we process personal data, the lawful bases on which we rely, and your rights as a data subject is set out in our Privacy Policy, which forms part of these Terms.
7. Intellectual Property
All intellectual property rights in and to the Service, including the software, interfaces, branding, documentation, models and any improvements, are and will remain the property of Myfour Ltd or our licensors. Nothing in these Terms transfers ownership of those rights to you.
We grant you a non-exclusive, non-transferable, non-sublicensable licence to access and use the Service during the term of your subscription, solely for your Organisation's internal business purposes and subject to these Terms.
You retain all rights in Input Information you provide. You grant us a non-exclusive, worldwide, royalty-free licence to use, copy, store, process and otherwise handle Input Information to the extent necessary to provide the Service, comply with the law, and improve the Service in accordance with these Terms.
8. Confidentiality
Each party may receive information from the other that is marked confidential, or that ought reasonably to be treated as confidential given its nature and the circumstances of disclosure (“Confidential Information”). Each party will use the other's Confidential Information only as necessary to perform its obligations or exercise its rights under these Terms, and will not disclose it to any third party except to its personnel and professional advisers on a need-to-know basis and under equivalent confidentiality obligations.
This clause does not apply to information that is or becomes public through no breach of these Terms, was already known to the receiving party without obligation of confidence, is independently developed without use of the disclosing party's information, or is required to be disclosed by law or regulatory authority.
9. Service Availability and Changes
We will use commercially reasonable efforts to make the Service available, but we do not guarantee uninterrupted availability. The Service may be unavailable from time to time due to maintenance, updates, third-party outages or factors outside our reasonable control.
We may modify, withdraw, restrict or discontinue the Service or any feature of it, in whole or in part, at any time. Where a change is likely to have a material adverse effect on your use of the Service, we will provide reasonable prior notice.
10. Disclaimer and Limitation of Liability
Neither Myfour Ltd nor any of its employees, agents or sub-contractors makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy or completeness of any information delivered by the Service, or that the availability of the Service will be uninterrupted. To the maximum extent permitted by law, all implied warranties, conditions and other terms are excluded.
Subject to the paragraph below, our total aggregate liability to you arising out of or in connection with these Terms and the Service, whether in contract, tort (including negligence), breach of statutory duty, or otherwise, shall not exceed the total Fees paid by you to us in the 12 months immediately preceding the event giving rise to the claim. We shall not be liable for any loss of profits, loss of business, loss of goodwill, loss or corruption of data, or any indirect or consequential loss.
Nothing in these Terms or other documentation limits our liability for death or personal injury arising from our negligence, nor our liability for fraud or fraudulent misrepresentation, nor any other liability which cannot be excluded or limited under applicable law, nor does it affect or limit any statutory rights you may have as a consumer.
11. Suspension and Termination
Either party may terminate these Terms for convenience at the end of any subscription term by giving written notice in accordance with the applicable order page, pricing page, invoice or other written agreement.
We may suspend, restrict, pause, disable or terminate your access to the Service immediately on written notice if:
- you fail to pay any Fees when due;
- payment for a renewal period is not received before the end of the current paid access period;
- your payment method cannot be processed;
- you materially breach these Terms;
- we reasonably consider that your use of the Service may create a security, legal, operational, reputational or technical risk;
- we reasonably consider it necessary to protect the Service, our systems, our other users, or any third party; or
- we are required to do so by law, regulation, court order or a competent authority.
Suspension or restriction of access does not affect your obligation to pay any Fees or other amounts already due. We are not liable for any loss, damage, cost or inconvenience arising from suspension, restriction or termination of access where we act in accordance with these Terms.
If your access is suspended for non-payment, we may retain your account and Customer Data for a reasonable period, but we are not required to provide access to the Service or generate any further Content until all outstanding sums have been paid in cleared funds and we have agreed to reactivate the account.
On termination:
- your right to access and use the Service ends immediately;
- any Fees accrued up to the date of termination remain payable;
- any unpaid Fees for the current subscription term or committed access period remain payable, unless we agree otherwise in writing;
- clauses which by their nature should survive termination will continue in force, including those relating to fees due, intellectual property, confidentiality, data protection, limitation of liability, governing law and jurisdiction; and
- we will handle Customer Data in accordance with clause 3.
Termination or suspension of access does not require us to refund any Fees already paid, except where required by applicable law or expressly stated in these Terms.
12. Governing Law and Jurisdiction
These Terms, and any dispute or claim (including non-contractual disputes or claims) arising out of or in connection with them or their subject matter or formation, are governed by and construed in accordance with the laws of England and Wales.
The courts of England and Wales have exclusive jurisdiction to settle any such dispute or claim.
13. General
These Terms (together with the Privacy Policy, any order page and any other documents referred to in them) constitute the entire agreement between you and Myfour Ltd in relation to the Service.
- If any provision of these Terms is held to be invalid or unenforceable, the remaining provisions will remain in full force and effect.
- A failure or delay by us to exercise any right under these Terms shall not constitute a waiver of that right.
- You may not assign, transfer or sub-contract your rights or obligations under these Terms without our prior written consent. We may assign these Terms to any member of our group or in connection with a sale, reorganisation or transfer of our business.
- No person other than you and us shall have any rights to enforce these Terms under the Contracts (Rights of Third Parties) Act 1999.
14. Revisions
Myfour Ltd reserves the right to revise, withdraw or restrict access to the Service in whole or in part at any time, and to update these Terms from time to time. We will publish updated Terms on our website and, where the changes are material, take reasonable steps to notify you. Your continued use of the Service following the posting of changes to these Terms means that you accept the changes.
15. Contact
If you have any questions about these Terms, please contact us at hello@signal-layer.ai.
Myfour Ltd, 11 Brantwood Road, London, SE24 0DH. Registered in England and Wales, company number 09939423.