Bydd ar gael i bawb sy’n 16 oed neu ragor, ac mae’n rhan ganolog o raglen Profi, Olrhain, Diogelu GIG Cymru i adnabod cysylltiadau’r rhai sydd wedi profi’n bositif am y coronafeirws.
It will be available to those aged 16 and over, and forms a central part of the NHS Wales Test, Trace, Protect programme identifying contacts of those who have tested positive for coronavirus.