Interview Waiver Program is introduced just 3-4 months back and there is no much information on experiences , discussions available on net.
You can check if you are eligible for IWP on VFS site
I have been issuded B1/B2 US visa 4-5 times - every time one year visa.( At Mumbai)
I was never rejected for US visa
I am ten finger printed when I got my visa in 2009
During last three times I was put under 221g. Every time it is cleared without any problem but had to wait for clearance 0.5 -1.5 months
Now I applied under IWP and at VFS office following documents have been submitted
Application confirmation letter, passport, photo, HDFC receipt
VFS person told that there is no need to attach any supporting documnent ( business letter etc)
1) How many days it would take to get my passport ( with visa) in my hand?
2) Will they call me for interview for showing supporting documents?
3) Will they put me again under 221g?
4) Will you please share you experience if applied under IWP