I think they meant 'fingerprints' metaphorically, as in any kind of digital traces, like a driver's license, etc.
"The LINE RNA then moves back into the nucleus to insert into the eukaryotic genome." https://en.wikipedia.org/wiki/Retrotransposon#LINEs
Somebody explain to me how Joe Biden won't be inaugurated President in 2024.
Because nobody will vote for him?
Nobody voted for him in 2020 either.