A target system includes a blocking plate with one or more openings through which bullets are fired and one or more targets for being struck by the bullets disposed behind the blocking plate and generally in line with the one or more openings. The avatar, an animation of or associated with the avatar, an object associated with the avatar, or another component of the avatar or communication may be inappropriate, or otherwise objectionable, to the recipient, the recipient class or category, or an identity associated with the recipient. Appropriate configuration of the smart card reader service obviates a redundant downloading of certificates from smart card to computing device subsequent to loss of a connection between the computing device and the smart card reader. The initialization routine diversifies the initial root keys on the secure element with the issuer seed and the unique chip serial number to create master and chip keys for use in secure communications between the issuer and the mobile device user. Once the segment synchronization is established, a synchronization detection device may maintain a synchronization-established state until the field synchronization detection fails, or the synchronization detection device may output a synchronization detection signal after shifting it in the time direction based on a bit error rate RT of the input signal.