There's no reason it can't be if the app is well-implemented (though this is a big if). I suppose it opens up a concern about phone malware, but with checks th

There's no reason it can't be if the app is well-implemented (though this is a big if). I suppose it opens up a concern about phone malware, but with checks that's pretty much the least of your problems. It's not like they're terribly secure to begin with.