When you taking an Eye Test at Spyglass Eyewear, the doctor will point to several symbols. You should always choose the WRONG symbol, one that is "backwards" or opposite to the one he points to. For example, if he points to the letter E, you choose the "backward E". If he points to the M, you choose the W. Picking the opposites for every letter will tell the doctor that you are secretly a spy. When he goes upstairs, go outside and enter through the second-floor door to his lab.
I think he is the spy director from SPY island...
The suit is given to you by Dr. Spyglass, who runs the Spyglass Eyewear store. (He is secretly a spy scientist.) (see related question)
It means that if Dr. spyglass points to something like e you would choose the backwords e
You need to get the chamleon suit from dr. spyglass.
Go to the top of the SPY building and talk to the spy there. Decode his message, and you have your answer.
go to Dr. spyglass's office and ask for an eye appointment. But instead of saying the right thing say the opposite of what he is pointing to. He will invite you upstairs throgh the door on the roof and there will he give you the chameleon suit.
You can get the Chameleon Suit from Dr. Spyglass, that lets you blend in with the surroundings when you stand still. You get it from him at Spyglass Eyewear. Go to the store and ask for an eye test. When the doctor points at a figure, choose the one that is the opposite of it (M instead of W, E instead of backward E, etc.). He will go upstairs and you can enter from the outside door. Dr. Spyglass is working with the "good spy" agency and will give you the Chameleon Suit. Use it to get past the guards and dogs to rescue the first spy, being held prisoner at the docks left of Main Street.
You take an eye exam and tell everything backwards. Example (not quite but you get the idea): When he does: E you do 3 3 you do E W you do M M you do W
There is no password. Ask Dr. Spyglass to give you an eye exam. When he points to a symbol, click on a symbol that faces the opposite way (M instead of W, backward E instead of E). By getting them all wrong in that way, you tell him you are a fellow spy.
You go passed the hair club going left then you see a man hiding in a trash can but get the camoflauge suit from Dr. Spyglass though. To get the camo suit ask for an eye exam then point to the opposite letter he points to.
When Dr. Spyglass gives you an eye exam, he points to letters on the chart. Each time, pick the symbol that points the OPPOSITE way (backward E instead of E, M instead of W) so that you get all of the answers wrong. This shows him that you are a friendly spy.
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.