Generally, this disclosure describes technologies for restoring and/or synchronizing templates such as biometric templates to/among one or more client devices. In some embodiments one or more client devices may register with a synchronization server and provide encrypted copies of their reference templates to the server. In a restoration operation, the synchronization server may provide an encrypted copy of a client's reference template(s) to the client, which may decrypt them in a protected environment. In a synchronization operation, the synchronization server may provide encrypted copy of a first client's template(s) to a plurality of second clients. The second clients may then decrypt the encrypted template(s) within a protected environment using an appropriate decryption key.