Selling your old smartphone or laptop is a great way to recycle hardware and make extra cash. However, simply resetting the device is not always sufficient. If not properly wiped, buyers can use data recovery software to extract your personal photos, emails, and passwords.
The Secure De-authorization Pipeline
Before factory resetting your device, follow these steps: De-authorize the device from your Apple ID or Google Account. Turn off Find My Device. Perform a full disk encryption reset, which encrypts all remaining data and destroys the decryption key, ensuring that recovery tools recover nothing but noise.
Physical and Digital Cleanup
Ensure you remove physical micro-SD and SIM cards from smartphones. On laptops, perform a secure operating system overwrite, ensuring your old files, browser profiles, and personal emails are completely destroyed before the hardware is handed over to its new owner.