So my question is how you trust a service like this. I've thought of similar but each time I see someone with that solution I'm reluctant to use it. If Google o

So my question is how you trust a service like this. I've thought of similar but each time I see someone with that solution I'm reluctant to use it. If Google or someone as big came up with that I'd have more trust in them given the reputation and scale they've built over a number of years but new entrants will struggle. All I can think is you need a really well known way to create trust. Maybe starting with an open source solution.