Old (big) mag cards?

[johnb]

(07-05-2023 06:14 PM)blackjetrock Wrote:  If you want to make something that isn't going to be re-recorded like an ID badge then you'd use Hi-Co as it will be recorded in a special Hi-Co writer. It is then more robust to stray magnetic fields. [emphasis mine]
[...]
Lo-co material is used when you will be re-recording data, like calculator storage cards.
[...]
So in battery powered equipment you'd use lo-co to reduce the power requirement.

Well duhhhhh!

I really should have been able to figure that out for myself.
And I'm embarrassed that I did not.
Thanks for humoring me, though!

[JB, here donning the dunce cap for today, LOL...]