# MQTT - Allow integration of an external "device" (smartphone) **URL:** \ **Category:** Configuration\ **Tags:** mqtt\ **Created:** [April 29, 2021, 1:49pm UTC](https://community.gladysassistant.com/t/mqtt-permettre-lintegration-dun-device-externe-smartphone/6288 "2021-04-29T13:49:46Z")\ **Posts on this page:** 1\ **Showing post:** 40
**Author:** ![lmilcent](https://gladys-assistant-community.b-cdn.net/user_avatar/community.gladysassistant.com/lmilcent/32/7023_2.png) [@lmilcent](https://community.gladysassistant.com/u/lmilcent)\ **Post date:** [October 18, 2021, 9:41am UTC](https://community.gladysassistant.com/t/mqtt-permettre-lintegration-dun-device-externe-smartphone/6288/40 "2021-10-18T09:41:20Z")
Sorry, I think I got myself in a muddle! To summarize and provide some context: - Gladys is installed at my place, on a Raspberry Pi and is not exposed or accessible on the internet. - I don’t have a Gladys Plus subscription yet, so no access to Gladys live from the internet. - Need: To define myself as « present » when my phone is on Wi-Fi only. Procedure: - I use [presence publisher](https://play.google.com/store/apps/details?id=org.ostrya.presencepublisher&pcampaignid=pcampaignidMKT-Other-global-all-co-prtnr-py-PartBadge-Mar2515-1) for Android, which allows, once connected to Wi-Fi at home, to send MQTT messages to Gladys. - In Gladys, under « MQTT », I create a new device of type « presence » with values « 1 » and « 0 » (no choice but to use numbers). - Presence detection: In a scene, the « Device state change » block on the MQTT device linked to what my application sends, allows me to mark myself as present. - Absence detection: In another scene, I mark myself as absent when the signal is more than 15 minutes old. For this, the « Check presence » block over the last 15 minutes allows me to mark myself as absent when the signal is no longer received. **Warning:** by default, the application sends « online » and not « 1 » to Gladys. Once I modified the parameter in the Android application, the scenes are functional as expected (before I thought it was 1 and 0). **Tip:** I wanted the application to send messages without giving it access to the GPS and keep my GPS always on (necessary to allow it to know the Wi-Fi SSID). I use what the application calls « Absence messages » to notify Gladys that I am home on Wi-Fi (logical 😅). Knowing that Gladys marks me as present when it has messages and absent when it has nothing, it works as I want! For this: 1. Deny GPS permission (location) 2. In « conditions », enable « Send without Wi-Fi » 3. In the « None of the above matches » section, enable « Send absence message » and modify the « Absence message » value to « 1 ». --- _[View the full topic](https://community.gladysassistant.com/t/mqtt-permettre-lintegration-dun-device-externe-smartphone/6288)._