http://www.fretlessfingerguides.com/
From the site:
The Guide is one piece, made of clear cling vinyl
No need to loosen or remove the strings to put it on
Easy on, easy off. Goes on in seconds
Uses no glues or adhesives, clings to itself not to your instrument
Never use sticky violin finger tapes or position marker strips again
The color coding of the notes is different than LM, and doesn’t appear to be available in 1/4 violin unfortunately.