you're free to check your device as necessary. the personal device rule is for things that have cameras and storage. so a smart watch that can receive messages would be fine. we seem to think that the only way to communicate with someone is via personal device, but in the corp world there is always a corp phone on employee's desk. you could provide that number to whatever contacts you wanted, so this lame concept of passing notes is just so unimaginative on your part that it just feels like someone grasping for straws.
