bar code readers; portable computer controlled data entry terminals; base and remote radio and transmitting stations for use with data entry terminals; retail merchandise checkout stations comprising bar code readers; computer software programs for processing self-checkout of retail merchandise and computer hardware relating to self-checkout of retail merchandise

consultation services in the field of bar code data capture systems comprising bar code readers, portable computers, base and remote radio and transmitting stations for use with data entry terminals, retail merchandise checkout stations having bar code readers