How do I make a GATT server connect to a specific clients(without pairing mechanism)?

[Rifat Mahmud]

How do I make sure, the GATT server running on the BLE peripheral client connects only to a specific app based central/GATT client app, which has been authenticated via web? In other words, how Estimote allows its BLEs to connect only to its specific app.

[Anders Strand]

Hi.

If you are referring to estimote beacons? These are iBeacons, which just broadcasts a set message out in the area around them. The smartphone app does not connect to the beacons, it just scans them and read the information they broadcast.

A BLE peripheral cannot choose which central is allowed to connect. The only exception is with whitelisting, where the peripheral has stored information about a previously bonded device. It will then only allow connections from that device.

If you tell me more about what you want to make, i might be able to provide more specific tips. How are you planning to do authentication over web to a BLE device?

-Anders

[Rifat Mahmud]

Hi Anders, thanks for the response. Our end user device will be a small BLE device based on nRF51822. Now, we want the customer to connect to the end BLE device with an app provided by us only if he registered it on web with the given key. The BLE end device will not have any display or keyboard to do the canonical BLE pairing. We don't want any other central app/device to connect(or even see if possible) to our end devices. What are the ways we can do that?