I got the idea from Magierpichu's chest system, so I made a similar thing with players.
When you start the machine, click the button und voila! It is running, and you have a Warpbook and Admins' Warpbook.
The first let you dial your score to a special number and if it matches with a warp's score, you will be teleprorted there.Every time your score will be deleted. The second book allows you to create warps, set their score and to kill them.
You can have 999 warps in the same world!
You just need to install this 10 command block creation.
Everything is done with scoreboard operations and one tp command.
Sadly it won't work if they are unloaded =(.(the warps)
Plans: make it work while they are unloaded.(not coming soon for sure)