I think a couple of the definitions in the Terminology section (2.3.1) are wrong.

It looks like the Subscriber definition is a repeat of the RTLS definition.

The Subscriber definition may have been given to the "subject" term

Or at the least, I'm not sure I understand the subject definition given the use of the work before

• RTLS - The acronym for Real Time Location System, which is a server/software that captures, processes, and stores information about the location of tags.
• Subject - The system that is "subscribed" to, or wants to receive updates from the RTLS about information pertaining to the location/status of tags.
• Subscriber - The acronym for Real Time Location System, which is a server/software that captures, processes, and stores information about the location of tags.