# How do I detect a specific computer being turned on and run a flow?

**URL:** <https://community.homey.app/t/how-do-i-detect-a-specific-computer-being-turned-on-and-run-a-flow/9956>\
**Category:** Questions & Help\
**Created:** [March 2, 2019, 12:39pm UTC](https://community.homey.app/t/how-do-i-detect-a-specific-computer-being-turned-on-and-run-a-flow/9956 "2019-03-02T12:39:52Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![bvdbos](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/bvdbos/32/2352_2.png) [@bvdbos](https://community.homey.app/u/bvdbos)\
**Post date:** [March 2, 2019, 1:19pm UTC](https://community.homey.app/t/how-do-i-detect-a-specific-computer-being-turned-on-and-run-a-flow/9956/4 "2019-03-02T13:19:05Z")

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> [@Darkness](#):
>
> It seems counter-intuitive that there is no way to monitor the router or the LAN to check if a new MAC (layer 2) or IP (layer 3) has appeared on the network to trigger the flow.

That’s [SmartPresence](https://apps.athom.com/app/nl.terryhendrix.smartpresence), however the dev didn’t update it yet so you need to [download it](https://bitbucket.org/terryhendrix/homey-smartpresence/src/master/), alter compatibility yourself now and[install it through the CLI](https://community.homey.app/t/how-to-cli-install-method/198).

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