Originally Posted by TheCyberDruid
Nonetheless I don't think that there was any physical protection on tapes.
Yes there was. The k7's copy protection tab was cut.
Nothing you couldn't fix with tape if the game was crap anyway.
On Spectrum I remember to copy a certain game to tape i needed to use a special software copy tool (now i don't remember the name). But nonetheless 98% of original game k7s were copied without any anything more special than two decks.