Reviewed and fact-checked: 21 July 2026.
An AI recorder is not only a microphone. It is a chain of hardware, firmware, mobile software, account services, transcription models, storage, subprocessors, support access, exports and supplier commitments. Due diligence should test the whole lifecycle rather than relying on a product page or a single security claim.
Quick verdict: Buy the workflow, not just the device. Require evidence for data flows, security, deletion, AI use, accuracy, support and exit—not vague assurances.
This checklist provides general procurement information. Requirements should be adapted by privacy, security, legal, records-management, safeguarding and sector specialists.
1. Define the intended use
- Approved and prohibited recording contexts
- Likely sensitivity of conversations
- Expected number of users and recordings
- Recording duration, battery and local-capacity needs
- Languages and specialist vocabulary
- Integration, export and accessibility requirements
- Retention, deletion and audit requirements
- User and data locations
- Support and business-continuity expectations
2. Map the product chain
| Layer | Questions |
|---|---|
| Hardware | Who manufactures it, how firmware is updated and what happens if it is lost? |
| Mobile app | Which permissions are required, what is cached locally and which systems are supported? |
| Account service | What authentication, roles, session and offboarding controls exist? |
| AI processing | Which models process audio or text and is customer content used for training? |
| Storage | Where are primary, backup and support copies stored and for how long? |
| Subprocessors | Who are they, what do they do and how are changes notified? |
3. Request evidence
- Current data-flow or architecture description
- Security policies and independent assurance where available
- Vulnerability-management and testing summaries
- Encryption and key-management information
- Incident-response and customer-notification commitments
- Subprocessor and international-transfer information
- Retention and deletion documentation
- Business-continuity and disaster-recovery evidence
- Service availability and support targets
- Product lifecycle and update policy
- Contract terms matching procurement answers
4. Security checklist
- Encryption in transit and at rest
- Strong authentication and least-privilege access
- Logging of account, export, deletion and support activity
- Secure firmware and app updates
- Vulnerability disclosure and remediation
- Lost-device and account-compromise response
- Backup protection and tested recovery
- Incident notification and cooperation
5. Privacy and data-protection checklist
- Clear controller and processor roles
- Documented purposes and instructions
- Suitability for sensitive data and vulnerable groups
- Subprocessor approval or notification
- Transfer mechanism and location transparency
- Assistance with rights requests
- Deletion from live systems and backup handling
- No incompatible reuse of customer audio or transcripts
- Suitable data processing agreement
6. AI-specific questions
- Are audio and transcripts used to train, evaluate or improve models?
- Can model-improvement use be disabled contractually and technically?
- Does the service generate sentiment, emotion, identity or other inferences?
- How are model and feature changes communicated?
- What accuracy limitations exist for accents, noise, multiple speakers, names and specialist terms?
- Can a summary statement be traced back to transcript or audio?
- Are AI outputs clearly labelled as drafts requiring human review?
7. Run a controlled pilot
| Capture reliability | Quiet room, larger room, movement, distance and multiple speakers |
| Accuracy | Names, dates, numbers, acronyms, industry terms and accents |
| Workflow | Transfer, edit, export, share and deletion |
| Failure recovery | Interrupted sync, full storage and unavailable app |
| Access control | Wrong-user access, offboarding and shared-device scenarios |
Use non-sensitive or controlled data first and define pass/fail criteria before the pilot.
8. Review contract and continuity
Check service scope, data obligations, subprocessors, incident handling, support, data ownership, prohibited reuse, return and deletion at termination, audit evidence, price changes, feature changes, end-of-life notice and liability. Confirm local access during outages, export formats, migration, cancellation access, account closure and device reassignment.
Evaluating NERALVO Halo
NERALVO Halo is an ultra-slim AI voice recorder with 64GB local storage, up to 35 hours of recording, NOTE mode, supported CALL mode, Bluetooth synchronisation with the DOWAY app, and AI transcription, summaries, templates, translation, mind maps and exports. One year of DOWAY Max access is included.
Professional buyers should assess Halo hardware and the complete DOWAY workflow against their own privacy, security, accuracy, retention and contractual requirements. CALL recording must be supported, lawful, disclosed where required and permitted by the relevant phone, app, employer and jurisdiction.
Supplier scorecard
| Category | Suggested weight | Evidence |
|---|---|---|
| Security | 20% | Controls and assurance |
| Privacy and contracts | 20% | Data flow, DPA and subprocessors |
| Recording and AI quality | 20% | Pilot results |
| Usability and accessibility | 15% | User testing |
| Support and continuity | 15% | SLA and recovery evidence |
| Cost and exit | 10% | Whole-life cost and migration |
Frequently asked questions
Is a privacy policy enough?
No. Procurement also needs contracts, technical evidence, data-flow information, operational testing and configuration review.
Who should participate?
Users, procurement, privacy, information security, legal, records management and the accountable owner. Regulated uses may require additional specialists.
Final buying checklist
- The intended and prohibited uses are documented.
- The supplier and subprocessor chain is mapped.
- Security and privacy claims have evidence.
- AI training, inference and model-change questions are answered.
- A controlled pilot passed defined criteria.
- Contract, deletion, support and exit terms are acceptable.
- The complete workflow has organisational approval.
Strong due diligence reduces the chance that a convenient recorder becomes an unmanaged data, accuracy or continuity risk.
Ready to capture meetings properly?
View the NERALVO Halo AI voice recorder with 64GB local storage, meeting capture, compatible phone-call recording workflows and one year of DOWAY Max included.
View NERALVO Halo