there is nothing two way about these devices either.
audio recorder, still photographs, film, analog or digital video and/or internet depictions
if they fit the description of devices why wouldn't a non electronic sign?
Matter of fact the word electronic has not been in rule 1-6 for some time but is has said still photographs and internet depictions are not to be used for coaching purposes.
My point is that it is now illegal to hold up your ipad with a picture on it but not the play call placards. The rule needs an edit to either say "electronic" devices or to say no pictures or film etc of the ongoing game.