https://devzone.nordicsemi.com/f/nordic-q-a/42350/how-to-customize-eddystone-tlm-parametersHi There, I&#39;m interested to customize the eddystone TLM parameters as per the image below, which is replace the Battery voltage with Button detection On/Off. I did search through the forum and notice I need to break the eddystone specificationen-USTelligent Community 13Fri, 11 Jan 2019 11:30:08 GMThttps://devzone.nordicsemi.com/thread/165124?ContentTypeID=1Fri, 11 Jan 2019 11:30:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0e00b33d-f736-4401-9c0e-03cc1a447f27ovrebekk<p>Hi&nbsp;</p> <p>Technically you can&#39;t make any changes to the payload without breaking the Eddystone specification, but if you are using a custom app to read the beacon, and just need to embed a single bit of information, there might be some ways to make it work.&nbsp;</p> <p>For instance you can embed the button status in the LSB of the temperature or battery voltage. It will introduce a small amount of noise to the signal, but if absolute accuracy is not critical then it might be acceptable.&nbsp;</p> <p>Another approach is to skip the Eddystone payload completely and do a custom beacon packet, but then you will obviously not be inter-operable with existing Eddystone based apps.&nbsp;</p> <p>Best regards<br />Torbjørn</p><div style="clear:both;"></div>