Capture Picture Using Front Camera Without User Knows

I want to capture picture through front camera without user knows that he was captured when authentication failed..Can anybody suggest me how to do? Thanks, Chaitanya.K

Solution 1:

not sure but can try

this code is Android: take a picture without displaying a preview

so you can to put what you want to show preview screen like show the message and say user to press ok or any other better option to say the user to press button and onpress capture the image .........