Personal digital assistants are:

Responses

small chip$-$based tags that wirelessly emit a unique identifying code for the item that they are attached.

small chip$-$based tags that wirelessly emit a unique identifying code for the item that they are attached.

systems that provide rewards and usage incentives, typically in exchange for a method that provides a more detailed tracking and recording of customer activity.

systems that provide rewards and usage incentives, typically in exchange for a method that provides a more detailed tracking and recording of customer activity.

transaction processing systems that capture customer purchases.

transaction processing systems that capture customer purchases.

handheld computing devices meant largely for mobile use outside an office setting.