But while Brian's idea deals with the obsession in a social context, measures also need to be taken at home. Some people drop their smartphones into a box the moment they arrive home, which gives them the chance to interact with the people they live with. The fact that the phone cannot be heard - it is on silent - nor seen - the flashing lights are hidden by the box - means that they are no longer tempted to use it.

Câu hỏi

The word it in paragraph 2 refers to _______.