There are none essentially. Though there are companies like GDC and GB Group, their outreach is limited when it comes to the emerging markets (read: developing world). AVS for most of the developing world is simply not available.
Most recently, a lot many people have started implementing Google Maps validation APIs on to forms, etc. (sign up for BitPay and you will experience this - Start Accepting Bitcoin with BitPay)
References:
Most recently, a lot many people have started implementing Google Maps validation APIs on to forms, etc. (sign up for BitPay and you will experience this - Start Accepting Bitcoin with BitPay)
References:
- Identity Intelligence Solutions for ID Verification - Customer Registration - Marketing Services & Tracing
- Online Identity Verification Software