Ticketmaster to kill long lines by checking event attendees in with smartphone audio data

Ticketmaster is launching a new ticketing system that can passively check attendees into events using audio data from smartphones to reduce entry wait time. Rather than manually scanning a QR code or a barcode from a paper ticket, a “smart tone” technology can receive attendee’s data over their smartphone’s ultrasonic sound transmission to verify their mobile ticket and ID, allowing people to cruise in simply by showing a green approved screen on their phones.
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