23 Feb
2015
23 Feb
'15
4:57 a.m.
Am 22.02.2015 um 05:26 schrieb Martin Holmes
: A check digit is an interesting idea. But generally, I'd say that if machines are manipulating documents containing ids, the ids won't be garbled; if humans are manipulating them, they're as likely to make an error in the check digit as in the rest of the id. The point is, with a check digit you will find those false IDs. Without, you can’t tell whether LOND47 is actually LOND74 with accidentally transposed digits.
Cheers Peter