As sceptical scientists we would rule out time travel. That is plainly impossible.
What would people in 1928 say about that person? How would they explain it? There were no phones and no net work so that clearly is not a cell phone.
I don't see how anyone can seriously entertain the idea that this might be time travel. Today there are heaps of naive, gullible people who believe all manner of crap and nonsense. They believe extraterrestrials have visited our earth and all manner of foolish things. If you want to believe rubbish you will find plenty on line. Conspiracy theories, etc., blah, blah, blah.
We don't have to be able to explain what was going on to rule out any possibility that this is evidence of time travel.
Shake your sorry heads the naive Flotsam of Getbig!