From there to cell/smartphones there is a (very) short step. Would you be forced to not have with you your cellphone in plane trips if just one event of that ha

From there to cell/smartphones there is a (very) short step. Would you be forced to not have with you your cellphone in plane trips if just one event of that happens? Put them in a strong/safe box on trip? What about notebooks? What about only letting "approved" manufacturers with zero maintainability? What about places or events where you use some of those devices? Once you cross one line, a lot of them may follow.