On Tuesday, 6 April 2021 at 16:45:10 UTC+1, Theo wrote:

One thing to be aware of is that the used tape cartridges contain the used
film which is a 'negative' of what you printed. So if you label anything
sensitive (like say passwords on equipment) you should be sure to destroy
the tape inside the cartridges.

Anyone that prints passwords out to stick on equipment probably isn't too fussed about security... ;-)