An apparatus comprising: a processor; and a memory including computer program code, the memory and the computer program code configured, with the processor, to cause the apparatus to perform at least the following: compare received biometric face vectors, wherein each received biometric face vector is received from a respective electronic device of a plurality of electronic devices and comprises one or more biometric face values determined from a respective image of a person captured by the corresponding electronic device; and provide for pairing authentication of the plurality of electronic devices if the comparison meets a predetermined similarity criterion.