From the Patent:
"Recognition and the establishment of messaging communication may gbe dependent, at least in part, on at least one predetermined parameter. One such predetermined parameter may be a vicinity range, wherein the first and second transceivers, in order to recognize one another must be within a pre0established vicinity.
>>Currently such a pre-established vicinity range may be generally about 100 meters. However, it is emphasized that the vicinity range is not limited to 100 meters and can vary greatly based at least in part on technological advancements and the specific applications of the present invention.<<"
"As set forth above, the vicinity range may be pre-established and determined based on current technological standards and may vary greatly."
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So, in my opinion, "pre-established vicinity" simply means a vicinity established and allowed by the technology that is in use at the time. Also, "allowed by the technology", would certainly infer that if you were in a steel maze or in an open plaza, the vicinity must vary by laws of physics.
I fail to see how tmobile can claim it is a certain distance at all!
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