Bastion Key

Bastion Key

Your smartphone as a key

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Free

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Released
July 8, 2026
Updated
October 16, 2026
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About

Bastion turns your phone into the keys for your building. If your housing provider or site manager has issued you a digital key, register it once and hold your phone to the lock to open the door. No extra hardware, no card to carry. - Register a key from the invite you receive, in a couple of taps. - Open compatible locks by holding your phone to them over NFC. Opening works offline. - See the keys you hold and when they expire. - Clear guidance when something needs attention, such as a key that needs syncing. Keys are issued and managed by your housing or locking system provider. Bastion does not require an account or password.
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What's New in Bastion Key

1.2.0

October 16, 2026

The app now offers to turn on notifications once your key is registered, so you hear about changes to your access. If a lock turns you away because your access hasn't started yet, the app tells you when it starts. When a lock refuses or a code step lapses, the app can name who manages your access and give you a button to call them. Clearer guidance while you register: we tell you a separate message with your activation code is on its way. A reminder to keep the app installed, since deleting it removes your key. Fixes to how your saved access reads offline, including around the clocks changing, and to place names on the access sheet. Opening a registration link when the app wasn't running now works reliably.

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