beep

David, one of the volunteers, glances back and forth between a piece of white paper in his left hand and a GPS satellite phone in the other, listening for the distant beep every time the system acknowledges a coordinate.

"As a deaf person, I can't hear the beep when I scan items so I'm always getting in a tangle with them as they don't always scan correctly," said Anna Kenyon from Manchester.

For the last two weeks, White and his neighbors have heard frequent honking at any and all hours coming from the Waymo lot, often waking him in the middle of the night as the cars beep at each other — a seemingly worthless alert as one unmanned vehicle honks at another.

"When you drive in Paris, people, mostly the motorcycles, put on the light and just go beep, beep, beep, and they just continue in between cars," says Elisabeth.

“We don’t have a code,” said a woman from Mexico, watching others – armed with the requisite QR security code – pass, with an approving beep, through a police checkpoint.