Thief will cater those who prefer their pickpocketing to be nice, quiet and devoid of visual noise.
According to Thief's Lead Level Designer, Daniel Windfeld Schmidt, the game will feature an old-school mode of sorts. Activating it will disable elements on the heads-up display and tone down master thief Garrett's special abilities. If you want to sneak through unseen – sans notifications, contextual helpers and slow-motion swipes – this will be the way to do it.
With modern recording and social sharing capabilities, you'll even be able to prove you finished the game ... without alerting anyone.