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Asynchronous read (or default read) can be activated or deactivated using the
appropriate commands in the command set. During asynchronous read, the
reader continuously tries to read all tags in the field. When a tag is detected, one
or several read events are asynchronously pushed into an internal buffer (the
event buffer). The host system then needs to poll the event buffer periodically to
retrieve the latest events.
One can specify the kind of read events that should be reported during
asynchronous read, as well as several options (called read modes) that should be
applied during asynchronous read. The following sections provide more details
about the different read events, as well as the different read modes.
