Embedded, disposable, washable, somehow reliable electronics will be used in future clothing. It could be antennas, low volt rechargers, small sensors, information chips, wireless devices, etc It will be up to the specific use. For military soldiers, explorers, remote workers it could be absolutely positive. For children under supervision with -secure- connections, it may be possible. For everybody, as long as it will be proven, reliable and won't represent any threat, ok.
If any of these devices could be accessed remotely and could reveal sensible information further security developments should be done. But anyway, cellphones provide a lot to hackers.