PhotoBlock allows you to simply and easily authenticate. No need to manage private keys or addresses. PhotoBlock works with a photo you provide (any JPEG will do) and your personal emoji sequence called an EmojiKey. The photo is transformed into a downloadable PhotoBlock file with embedded accounts for Web, Bitcoin and Ethereum (the three platforms currently supported). You can then use your PhotoBlock with your EmojiKey to unlock and access the accounts anywhere PhotoBlock is integrated.