first,you need to go to the store where there are glasses,thentake an eye exam,next if he shows you a letter you do the opposite .
these are some examples:
M then press W
you have to get the chameleon suit from that one guy
either go to spy island and get the comealion suit, go to the store and get the vanish card, or go to wild west island and get the bottle of tonic
because you can only be invisble with it if you are standing still
You do Dr. spyglasses' eye test and he tells you to meet him up stairs. climb up the ladder and walk in the door. talk to Dr. spyglass and he gives you the chameleon suit.
The chameleon suit.
You can only wear the chameleon suit on Spy Island.
you get an invisable suit from the eyeglass guy
stand still
Use the chamelon suit.
You need to get an invisible suit
Well, the way you can blend in is you have to get the cameleon suit from that eye doctor. Put the cameleon suit on, and voila! You blend right in with spy island.
you get it from the eye doctor at the eye place take the E test and answer the opposite anwers of what direction the E he points to for example he points to an E that is facing up say it is facing down and points left then right when you complete the test you meet the eye doctor upsatirs and he will give you the suit hope this helped :)