47 CFR § 95.531 - Permissible FRS uses.
FRS units are primarily used for short-distance two-way voice communications between individuals.
(a) Digital data. In addition to voice conversations, FRS units may transmit digital data containing location information, or requesting location information from one or more other FRS or GMRS units, or containing a brief text message to another specific GMRS or FRS unit. Digital data transmissions may be initiated by a manual action of the operator or on an automatic or periodic basis, and a FRS unit receiving an interrogation request may automatically respond with its location. See also § 95.587(c).
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