The disconnection notification will help stop you leaving your keys, valuables or phone behind when you leave a location.  

If your phone gets too far away from your Mytag it  loses Bluetooth connection.  

If this happens both your phone and MyTag will ring to tell you that you have left one of them behind.  

You can enable or disable this function for each MyTag, so your keys and valuables can respond differently.  You can also change the alert melody your phone and each MyTag will use, so you can even tell from the sound exactly what you have left behind.