# Smart Presence by Bjørnar Almli

**URL:** <https://community.homey.app/t/smart-presence-by-bjornar-almli/35392>\
**Category:** Questions & Help\
**Created:** [October 3, 2020, 7:18am UTC](https://community.homey.app/t/smart-presence-by-bjornar-almli/35392 "2020-10-03T07:18:15Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![Rrrr](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rrrr/32/629_2.png) [@Rrrr](https://community.homey.app/u/Rrrr)\
**Post date:** [December 31, 2020, 1:40pm UTC](https://community.homey.app/t/smart-presence-by-bjornar-almli/35392/4 "2020-12-31T13:40:53Z")

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There is another thread for this.

> [@\[APP\]\[PRO\] Smart Presence](https://community.homey.app/t/app-smart-presence/33794):
>
> Smart Presence Device Tracking: The app tracks devices by their IP address. You would need to set a static IP address for each device you want to track. This is necessary because if the device’s IP address changes (which can happen with DHCP), the app won’t be able to track it properly. Port Scanning: The app checks whether the specified devices are reachable on the network by attempting to connect to a specified port. Closed ports are often used for this purpose. When a device is con…

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