https://devzone.nordicsemi.com/f/nordic-q-a/33778/need-advice-about-beaconHello, I envisage to use beacon as anti-theft system: When the beacon (inside the product to protect) will be near (2m) from the door, it will trig an alarm. So a receiver will be place near the door. So, I would like to know if we can determineen-USTelligent Community 13Wed, 02 May 2018 20:22:55 GMThttps://devzone.nordicsemi.com/thread/130672?ContentTypeID=1Wed, 02 May 2018 20:22:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6e4bf5ad-ce25-40e4-a638-c2ab6d151ca2Arnaud DELAUNE<p>Thank you Edvin.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/129801?ContentTypeID=1Wed, 25 Apr 2018 14:06:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:369aa04b-88ac-42a4-8680-405deeeadce6Edvin<p>Hello Arnaud,</p> <p>I assume you are thinking of using the RSSI value to determine the distance to the door?</p> <p>In general, RSSI is not very straight forward to use for distance measurements. It often depends on obstacles/environment, and the antenna, orientation of the device and so on. The best answer that I can give you is to do some testing to see if the RSSI is reliable enough to detect the ~2m threshold, and how difficult/easy it is to shield the signal with e.g. your hands/body.</p> <p>Or maybe someone else in this forum has some experience with something similar?</p> <p>&nbsp;</p> <p>Best regards,</p> <p>Edvin</p><div style="clear:both;"></div>