IAABO has said no such thing. This is the only "official" position that IAABO has taken (from the current issue of the Sportorials newsletter):

Electric Equipment Use On The Team Bench - As per 10.1.3,
such equipment can be used for only recording statistics. A state
association may over ride this rule and rule some equipment legal
or restrict all such equipment from bench use.

Yep, Tom Lopes' email was pretty clear.
Colorado has actually gone a step further and disallowed any electronic divices on the bench because there's no way to determine whether they're being used for statistical purposes.

There it is, then. Again, I haven't seen any such equipment yet, but we all have our local/state rulings to follow.

The spam above is actually kinda funny. I would love to see coaches using signalling jamming devices to thwart each other's use of iPads. :D

True, but I deleted it anyway. :)

I've seen it several times already. With the new guidance out this yr, I expect it to become more and more prevalent - and I don't expect any issues with the video portion which remains prohibited.

From NFHS ...
 

COMMENTS ON THE 2013-14 RULES CHANGE
USE OF ELECTRONIC DEVICES (1-19 NEW and 10-1-3): The previous rule was difficult to monitor and enforce by the contest officials. This rule allows the coach to take advantage of electronic tools available for use in coaching and gathering statistics. While in use, the coach must be in compliance with the guidelines that specify that electronic devices may not be used to communicate with the players on the playing floor nor can the devise be used to dispute an official's call.

This means that if after a call, the coach throws the device at your head, you can issue a T.