Similar questions have been asked often, but no satisfying answer so far...
Is it possible to (read-only) check the balance of a Monero address with only providing the address and ViewKey (no
Payment Id or
SpendKey or whatever), and without first installing/syncing software for it?
Just a simple web interface for this?
mymonero.com would be nice, but for the login on it, you always have to provide the
SpendKey as well (or the
LoginKey), which makes it risky to lose the funds.