Stellar just keeps on coming with good news! First with KiK moving it's Kin cryptocurrency platform to Stellar instead of Ethereum and now MobileCoin deciding to build ontop of Stellar!
MobileCoin wants to leverage an extensive architecture to add simplicity to real privacy protections and resilience against attacks. The ultimate goal: To make MobileCoin as intuitive as any other payment system.
The idea of MobileCoin is to build a system that hides everything from everyone, leaving fewer (or theoretically no) opportunities for abuse.
Source: https://www.wired.com/story/mobilecoin-cryptocurrency/