TWO-USER AUTHENTICATION

According to an example aspect of the present invention, there is provided an apparatus comprising at least one processing core, at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processing core, cause the apparatus at least to receive from a first device a digital key, receive from a second device an encrypted data item, decrypt the encrypted data item using the digital key to obtain a decrypted data item, and verify the decrypted data item matches a reference data item, and responsive to the decrypted data item matching the reference data item, grant access to at least one of the first device and the second device.