Knock 2.2

Free
Faster, safer way to sign in. You keep your iPhone with you all the time. Now you can use it as a password.
4.7 
Rating
58 votes
Latest version:
2.2.1 See all
Developer:
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Free   2.1 MB
Used by
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Review

Knock is a faster, safer way to sign in. You keep your iPhone with you all the time. Now you can use it as a password. You never have to open the app -- just knock on your phone twice, even when it's in your pocket, and you're in.

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4.7
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