Tags may be selected for compliance with certain standards. The standards may
be open, such as ISO, or they may be proprietary. It is a good practice to follow
the open and popular standards, because more companies manufacturing
products use these standards than proprietary ones, providing a wider choice of
products. In addition, these products may be cheaper due to higher volume, and
support for them may be available for a longer period.With the wide acceptance
of Gen 2 standards, it is best to use Gen 2–compliant products if you are going to
use UHF