Device binding
Device binding ties a user's credential to a specific physical device, so the credential only works from that device and cannot be used elsewhere.
文脈での使い方
In time tracking, device binding raises the bar against shared credentials and impersonation. A PIN or token that is also tied to a registered device cannot simply be read out and used by someone else on another phone. It is a lighter-weight alternative to biometrics that still links a punch to an individual, which matters in settings where fingerprint or face capture is unwelcome or legally fraught.
BriefQRとの関係性
BriefQR binds each operator's PIN to their device, so a punch can only originate from that operator's registered phone, preventing shared logins without collecting any biometric data.