SeedXOR is not a project per say, its just a formal guidance on how you can apply the XOR mathematical operator to securely turn multiple mnemonics into 1.

It has some neat properties:

1. Every mnemonic is a valid wallet
2. As long as each mnemonic is random, learning 1 mnemonic does not reveal anything about the others, nor about your combined result.

Do you have any specific questions about it? 

 Thanks, that makes it clear. I only saw that you referenced a gitlab url and thought that was not in line with the rest of the document. Seems like you thought of that 😊 

 The reference to SeedXOR is just an example, if you prefer to use multisig, or if you'd rather just give a single private key and know of a secure enough way to do it, then do that.

Trust is important in relationships, and it can simplify a lot, we should trust our friends and family more and trust our institutions less.