Monitoring of rooftop cargo for protecting personal property in the nature of monitoring of small, low-power transmitters that act as beacons and as radio frequency identification (RFID) tags, that also notify nearby mobile phone devices of the presence of user's personal property on automobile rooftops

'act':21 'also':32 'automobil':47 'beacon':23 'cargo':4 'devic':37 'frequenc':27 'identif':28 'low':17 'low-pow':16 'mobil':35 'monitor':1,13 'natur':11 'nearbi':34 'notifi':33 'person':7,44 'phone':36 'power':18 'presenc':40 'properti':8,45 'protect':6 'radio':26 'rfid':29 'rooftop':3,48 'small':15 'tag':30 'transmitt':19 'user':42

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