Bluetooth pairing without user confirmation

Question

Can I pair two devices over Bluetooth without a need to confirm this in user interface, accept to pair this devices. Can I exchange some extra data over, for example NFC, an

Answer 1

Yes it is possible in theory as defined by the specification. However there is no practical implementation as yet that would allow this.

Refer: NFC Forum Connection Handover Technical Specification http://www.nfc-forum.org/specs/spec_list/

Quoting from the specification regarding the security - "The Handover Protocol requires transmission of network access data and credentials (the carrier configuration data) to allow one device to connect to a wireless network provided by another device. Because of the close proximity needed for communication between NFC Devices and Tags, eavesdropping of carrier configuration data is difficult, but not impossible, without recognition by the legitimate owner of the devices. Transmission of carrier configuration data to devices that can be brought to close proximity is deemed legitimate within the scope of this specification."