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Read R84

R84 Other than the system provided by the ARENA, no other form of wireless communications shall be used to communicate to,
from, or within the OPERATOR CONSOLE.

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Examples of prohibited wireless systems include, but are not limited to, active wireless network cards and Bluetooth devices. For the case of
FRC, a motion sensing input device (e.g. Microsoft Kinect) is not considered wireless communication and is allowed.
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And T21

T21 The only equipment, provided it does not jam or interfere with the remote sensing capabilities of another Team, including vision
systems, acoustic range finders, sonars, infrared proximity detectors, etc. (e.g. including imagery that, to a reasonably astute
observer, mimics the Vision Guides), that may be brought in to the ALLIANCE STATION are as follows:
E. devices used solely for the purpose of planning or tracking strategy provided they meet all of the following conditions:
4. do not communicate with anything or anyone outside of the ARENA.
5. do not include any form of enabled wireless electronic communication (e.g. radios, walkie-talkies, cell phones,
Bluetooth communications, Wi-Fi, etc.)