That's the interesting thing about Nexus stuff -- it can look completely mundane outside the Nexus. Doc's certainly not gotten any comments about his PINpoint in Chicago. Anyone who asks gets told it's a multifunction watch. Which it kind of is, so. . . .

"Thanks," Doc says, starting to head in that direction. "And sure, just give me a minute to get my backup. I could use some more time out of the basement." He spends a quarter to get his miniPINpoint, then he and Marty are off to explore the internet in all it's wonderful and terrible glory.