Card reader assembly with manual transducer

Card reader protecting device

Card retrieval means

Card validating apparatus

Card validation, method and system

Cash register computing system

Check-out terminal

Checking apparatus for documents

Code converter

Code read-out means

Code readout apparatus

Code recognition record medium and technique

Code scanning system

Coded information-reading device

Coded merchandising coupon

Commodity identification apparatus

Control apparatus for determining usage time

Control card receiving and sensing assembly

Control logic system for article-labeling apparatus

Controlled access and automatic revenue reporting system