How does Mambo deal with duplicate photo?

Mambo is a free photo/video backup assistant that helps you to keep your memories backed up to your SmugMug account.

Users in 130+ countries trust Mambo.

Trusted by users in 130+ countries.

Mambo constantly monitors your photo uploads to ensure that duplicate photos are not backed up again which means "Mambo will never upload the same photo twice". There is an algorithm (Checksum) where Mambo checks a photo for duplicacy. If a photo is passed through the test, then only it is uploaded.