Many websites offer 2FA as an extra security measure. This requires  another piece of information to log in to your account, such as a  one-time code you receive via text.
Mae llawer o wefannau'n cynnig 2FA fel mesur diogelwch ychwanegol. Mae hyn yn gofyn am ddarn arall o wybodaeth i fewngofnodi i'ch cyfrif, fel cod unwaith fyddwch yn ei dderbyn trwy neges testun.