# Access device UUID from container app?

**URL:** <https://forums.balena.io/t/access-device-uuid-from-container-app/1846>\
**Category:** Product support\
**Tags:** resinos2x\
**Created:** [September 15, 2017, 8:33am UTC](https://forums.balena.io/t/access-device-uuid-from-container-app/1846 "2017-09-15T08:33:34Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![timo](https://avatars.discourse-cdn.com/v4/letter/t/c4cdca/32.png) [@timo](https://forums.balena.io/u/timo)\
**Post date:** [September 15, 2017, 8:33am UTC](https://forums.balena.io/t/access-device-uuid-from-container-app/1846/1 "2017-09-15T08:33:34Z")

</div>

Hi,

is it possible to read device UUID in container, for example using DBUS?

br,  
Timo

---

<div class="post-metadata">

**Author:** ![timo](https://avatars.discourse-cdn.com/v4/letter/t/c4cdca/32.png) [@timo](https://forums.balena.io/u/timo)\
**Post date:** [September 15, 2017, 10:19am UTC](https://forums.balena.io/t/access-device-uuid-from-container-app/1846/2 "2017-09-15T10:19:17Z")

</div>

To answer myself, using env variables.

---

<div class="post-metadata">

**Author:** ![imrehg](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/imrehg/32/36_2.png) [@imrehg](https://forums.balena.io/u/imrehg)\
**Post date:** [September 15, 2017, 4:29pm UTC](https://forums.balena.io/t/access-device-uuid-from-container-app/1846/3 "2017-09-15T16:29:40Z")

</div>

Hey @timo indeed, the UUID is exposed within the user container through the `RESIN_DEVICE_UUID` environment variable. To see what else is exposed and what do they mean, check out our docs! 🙂

> **[Communicate outside the container - Balena Documentation](https://www.balena.io/docs/learn/develop/runtime/)**
>
> Talk to the host OS, supervisor, and network from within a balena container