I reappeared 1/10 of a second after I left, back so quickly that no one even noticed that I'd been gone.
I discreetly dropped the black-market Chrono into the trash, where it rapidly degraded into an unrecognisable lump.
Time travel was my passion -- not boring tours, like the one I was on now, but highly illegal, off-the-beaten-path stuff, like the two weeks I'd just secretly spent in ancient Rome.
I'd never been caught, because I was smart and careful.
"Empty your pockets please."
I suddenly remembered my last day in Rome... and the coins I'd forgotten to get rid of.