# How to disable used pin

**URL:** <https://community.thunkable.com/t/how-to-disable-used-pin/1410212>\
**Category:** Questions about Thunkable X\
**Tags:** beginner\
**Created:** [July 23, 2021, 7:41am UTC](https://community.thunkable.com/t/how-to-disable-used-pin/1410212 "2021-07-23T07:41:25Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![solsol2004](https://avatars.discourse-cdn.com/v4/letter/s/2acd7d/32.png) [@solsol2004](https://community.thunkable.com/u/solsol2004)\
**Post date:** [July 23, 2021, 7:41am UTC](https://community.thunkable.com/t/how-to-disable-used-pin/1410212/1 "2021-07-23T07:41:25Z")

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Hi, I wanna make user access my app with a pin code and once it’s entered, the pin can’t be used anymore by others. Is there any way I can do this?

If I need to use Firebase, can anyone teach me how to do it?

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**Author:** ![muneer](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/muneer/32/75210_2.png) [@muneer](https://community.thunkable.com/u/muneer)\
**Post date:** [July 23, 2021, 9:11am UTC](https://community.thunkable.com/t/how-to-disable-used-pin/1410212/2 "2021-07-23T09:11:59Z")

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Whenever your app issues a PIN for a user store it in a database ( Firebase, Airtable, Google sheet) and alway check new PIN against this table of already used PIN(s).

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**Author:** ![solsol2004](https://avatars.discourse-cdn.com/v4/letter/s/2acd7d/32.png) [@solsol2004](https://community.thunkable.com/u/solsol2004)\
**Post date:** [July 23, 2021, 10:13am UTC](https://community.thunkable.com/t/how-to-disable-used-pin/1410212/4 "2021-07-23T10:13:57Z")

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Hi @muneer ! thanks for reply:) so there isn’t any automatic function that disables users reusing used PIN?

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**Author:** ![muneer](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/muneer/32/75210_2.png) [@muneer](https://community.thunkable.com/u/muneer)\
**Post date:** [July 23, 2021, 10:45am UTC](https://community.thunkable.com/t/how-to-disable-used-pin/1410212/5 "2021-07-23T10:45:52Z")

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> [@solsol2004](#):
>
> so there isn’t any automatic function that disables users reusing used PIN?

No, there is not. You will not find such automatic function in any development platform for general apps.

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**Author:** ![ioannis](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/ioannis/32/146956_2.png) [@ioannis](https://community.thunkable.com/u/ioannis)\
**Post date:** [November 8, 2024, 1:17pm UTC](https://community.thunkable.com/t/how-to-disable-used-pin/1410212/6 "2024-11-08T13:17:49Z")

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