32MB-SD-Card

Uploaded to show how he SD-Card "lock switch" works.

 

Indeed the little switch is only evaluated by the card reader, the card cannot protect itself

by setting the switch to locked. If the Appliance/or the cardreader is "evil" it can just ignore the setting of the switch and write to the card regardless of switch position.

 

The Switch is just a "flag" to be evaluated by the SD-Card reading device.

 

This also applies to SDHC cards for which the lock mechanism works in the same way.

 

[Blogged here: www.electronics-lab.com/blog/?p=2620 Thank you! :) ]

Done