Can I set peripheral nrf51 beacon as advertising for only specific masters

[okan1]

Hello,

First of all, I've read the entry below.

devzone.nordicsemi.com/.../

My questions: 1 - If I cannot advertise for only specific masters, how can I provide the visibility privacy of beacons?

2 - In my use-case, I've lots of peripheral nrf51 beacons, that are just advertising, and I'm using only the RSSI values by masters to locate them. But in my use case, anybody in the range of the beacons can see the beacons. For example, if anybody with Android phone is in the range of my beacons, all the beacons that I use will be listed on his/her phone. So tons of unnecessary ble devices will be listed on work-unrelated person's phone.

For this use-case, what kind of algorithm or connection type or etc. should I use?

Thanks.

[Petter Myhre]

What is the problem? That the non-specific master can see your beacons? Or that your beacons clutter the BLE device list on the phone?

[okan1]

Actually both. The one problem is that the beacons are listed unwillingly by masters in the range of beacon cluster. The 2nd one is that these beacons has to be seen by only the specified masters in perspective of security ıssues.

[Petter Myhre]

If you don't want your beacons to be listed in Bluetooth Settings you could try setting it in non-discoverable mode, you do this by not setting either the limited discoverable mode flag or the general discoverable mode flag.

If you don't want your beacons to be tracked, you can use the private resolvable address type or the private non-resolvable address type. See this for more information.

If you want to encrypt the content of the advertising data you need to add some proprietary encryption, maybe something like this.