bluejackingblue‧jack‧ing /ˈbluːdʒækɪŋ/ noun [uncountable] 
the practice of using a mobile phone with bluetooth technology to send a text message to another person near you, without letting them know who has sent the message. This is usually done as a joke to surprise the person who receives the message.—bluejack verb [intransitive, transitive]—bluejacker noun [countable]
the practice of using a mobile phone with bluetooth technology to send a text message to another person near you, without letting them know who has sent the message. This is usually done as a joke to surprise the person who receives the message.—bluejack verb [intransitive, transitive]—bluejacker noun [countable]