Unique ID for the Central or peripheral in connection

[vishal_a]

In my setup, i have a Node with SD130 as peripheral to Smartphone and as a central to a BLE peripheral. I need to store some Unique ID about the Smart phone and a Peripheral joined to the node, This ID will be used by an application to know the devices joined to it. So this ID should remain same through multiple connections, and should be retrievable after each connections to verify if its the same device(smart phone or the BLE peripheral).

What ID can i use for this purpose?

1. DeviceID? is this ID retrievable from the smart phone after my node joins it? ( I guess not).
2. MAC ID? , but mac id given by Smartphone will not be real one.

[Petter Myhre]

1. If you use DeviceID you need to send it through GATT.

2. It depends on what type of Device Address the smartphone is using. If it uses resolvable private address (like iOS is) you cannot use it directly, because the address will change between connections. What you can do is to bond, and then use the IRK as an ID.

[vishal_a]

Thanks Petter,

1. Does Smart phones (anrdoid & IOS) have a Device ID similar to Nordic DeviceID? if Yes, Is it accessible to app software?
2. Can you give me some documentation or example links, how to access IRK's by application?