No mobile phones or wireless devices allowed prohibition signage displayed
Schlüsselwörter
prohibition,
signs,
signs,
mobile,
phone,
cellular,
device,
wireless,
communication,
technology,
digital,
screen,
rectangle,
circle,
black,
red,
forbidden,
allowed,
restricted,
cancelled,
banned,
stop,
halt,
avoid,
negative,
denial,
signal,
wave,
radio,
transmission,
modern,
contemporary,
graphic,
design,
symbol
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