connectable packet

[anuja]

Hi, Is it possible to create a connected direct advertisement packet which can only be read when the passkey is provided.

[endnode]

No, Security Manager layer (which uses pairing with passkey etc.) lives only on top of LL and L2CAP for which connection must happen. If you want to protect advertising data you need to come up with some proprietary encryption scheme and key distribution and place such data in Vendor Specific AD element (if you are using GAP).