Android devices feature an “Emergency Information” (or Emergency Contacts) system designed to allow first responders to access critical medical data (blood type, allergies) and contact designated individuals directly from the device’s lock screen, entirely bypassing the PIN or biometric security prompt. While this is a vital life-saving feature for general consumers, it represents a severe operational security (OPSEC) and data privacy vulnerability in strict enterprise, military, or zero-trust environments. Permitting unauthenticated physical access to designated emergency contact numbers, organizational affiliations, or medical profiles from a locked corporate device provides malicious actors with an immediate social engineering vector or a localized data exfiltration point.
This guide explains how to completely disable ‘Emergency Information’ on the lock screen on Android, enforcing a strict zero-trust model where absolutely no personal or contact data can be extracted without cryptographic authentication.
Disable Emergency Information Access
To enforce a strict block against lock screen data leakage, we must aggressively purge the Emergency Information database via the core Android Safety settings.
- Unlock your Android device and open the main Settings app.
- Scroll down and tap on Safety & emergency (on older Android versions, this may be located under About phone > Emergency information).
- Tap on Medical information (or Medical ID).
- If any data is populated here, systematically delete every entry (Name, Blood type, Allergies, Medications, Address). Ensure the fields are entirely blank.
- Return to the Safety & emergency menu and tap on Emergency contacts.
- Systematically remove every single contact from this list by tapping the ‘X’ or delete icon next to their name.
- Crucial Step: Depending on your manufacturer (like Samsung or Google Pixel), there may be a specific toggle within the Emergency Information menu labeled Show on lock screen or Show when locked. If this toggle exists, switch it to the Off position.
Verify the Configuration Lockdown
By purging the database and disabling the lock screen UI hook, the Android device will no longer expose this information to unauthenticated users.
To verify the lockdown is active, press the power button to lock the Android device. Wake the screen and swipe up to trigger the PIN/Password entry prompt. Tap the Emergency button at the bottom of the screen. The emergency dialer will appear (which must remain active by law to dial 911/999/112), but the button or tab for “Emergency Information” will either be completely gone, or tapping it will reveal an entirely blank page. The Android device is now operating under a strict zero-trust OPSEC configuration, completely mitigating the risk of lock screen social engineering data leaks.