In comp.sys.ibm.pc.hardware.storage Sammy wrote:
I like to keep my old bank cards intact and use them for jobs around
the house. My worry is that the data on the magnetic strip can still
be read.

What is the best way to destroy that data without messing up the card
for D-I-Y work.

The only way to be sure on the cheap is not to use the cards. Blank
cards are not that expensive.

Arno