Keycard authentication with commands
I wanted to make a keycard authentication system using the /testfor command. I want to testfor a player with a JSON book. Is this possible?
I successfully managed to test for a player (myself if it makes any difference) with stone. Instead of minecraft:stone I then tried putting minecraft:written_book {etc.}. (After the written book I pasted the part of the command here: /give @p written_book. Why does this not work and what have I done wrong?
Best Answer
Item, entity and effect names have recommended adding minecraft: to them since they were implemented, and now require it. If you press Tab in the command prompt, it will automatically be added.
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Minecraft 1.16.5: How to make a keycard system
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