Earlier quoted context omitted.
Its easier for someone to obtain and identify your DNA than it is your fingertips or even your face. Just think of how much you leave around all the time. If that's all on records with facial images, your face is certainly an identifiable metric of your biology.
Obtain perhaps, but identify no. Identification requires a database of samples to match against. Way more FP and FI databases than DNA databases, so not much to use as a gallery for identification..
Those databases already exists (just look at the MyHeritage, FamilyTreeDNA, 23andMe etc companies). Furthermore, DNA has the advantage, that you can find someone via relatives. The person to be identified doesn't have to be in the database. It's sufficient if his brother or father is in that db. Afaik this is not the case for fingerprints.