For businesses that reuse and resell smartphones, whether you can provide an erasure certificate is critical. As leakage incidents increase, customers and partners increasingly require objective proof that data was sanitized correctly.
This article explains what a data erasure certificate is, what it typically includes, and why it matters.
What is a data erasure certificate?
A data erasure certificate is a document/report that proves a specific device’s data was sanitized using a defined method at a defined time. It is commonly issued by the erasure operator or a specialist organization.
What is typically included?
Common fields include:
– Device identifiers (terminal ID, manufacturer, model, serial number, IMEI/MEID, OS version, capacity)
– Erasure details (timestamp, method/software, result)
– Certificate metadata (issue date, signatures)
Why certificates matter
Prevent information leakage
A certificate supports assurance that erasure was performed correctly.
Enable incident investigation
If leakage is suspected, certificates help determine whether erasure was performed and where to investigate next.
Build trust
Certificates provide visible proof to customers and partners.
Improve operational management
For large-scale processing, certificates help track “which device was erased when and how.”
Use proper erasure software for reuse workflows
Depending on device generation and encryption state, factory reset may be insufficient—especially for older devices.
MASAMUNE provides certificate generation and centralized management suitable for large-scale operations.
