In a first implementation, a host determines to pair with a device and transmits biometric data for a user to the device. The device receives the transmitted biometric data and compares such to device biometric data to determine whether or not to pair with the host and/or what data stored by the device to allow the host to access. The host then accesses data of the device to which the device has allowed access. In another implementation, a device determines to pair with a host and transmits biometric data for a user to the host. The host receives the transmitted biometric data and compares such to device biometric data to determine whether or not to pair with the device and/or what data stored by the host to allow the device to access. The device then accesses data of the host to which the host has allowed access.