Decent way to scan hundreds of kilometers of receipts and register tapes?

[halfeye]

In this case, these are legally required to be kept as records for a time that may be longer than the deterioration time. So, deterioration of the tapes makes the preservation more urgent, not less.

If it is found that some older ones are illegible, reconstructing the records will be required by law in some cases. That's a completely different conversation than this thread, though.

This is probably going to cost millions or maybe billions (this is an approximate estimate, it should be possible to work it out to about an order of magnitue), I would suggest (I am not a lawyer or accountant) that somone checks with the owner whether declaring bankruptcy is a better option.