Wireless tag reading apparatus and method

A method comprising:

• identifying a communication interface that is connected to an external device, the identified communication interface being one of a plurality of communication interfaces;
• changing a power level of a radio wave used for reading a wireless tag based on which of the plurality of communication interfaces is identified;
• and
• reading the wireless tag using the radio wave at the changed power level.

A wireless tag reading apparatus comprising:

• a first communication interface configured to communicate with a first external device;
• a second communication interface configured to communicate with a second external device;
• an antenna configured to read a wireless tag within a reading area;
• and
• a controller configured to:
• identify either (a) the first communication interface as being in communication with the first external device or (b) the second communication interface as being in communication with the second external device;
• change a range of the reading area based on which of the first communication interface or the second communication interface is identified;
• and
• read the wireless tag within the reading area.