The second is what we call “interaction data.” This is data about an individual’s engagement with { -brand-name-firefox }, such as the number of tabs that were open, the status of user preferences, or number of times certain browser features were used, such as screenshots or containers. For example, we collect this data through the back button (that arrow in the upper left corner of your browser that lets you navigate back to a previous webpage) in a way that shows us someone used the back button, but doesn’t tell what specific webpages are accessed.

Yr ail yw'r hyn rydyn ni'n ei alw'n “ddata rhyngweithio.” Mae hwn yn ddata am ymgysylltiad unigolyn â { -brand-name-firefox }, megis nifer y tabiau oedd ar agor, statws dewisiadau defnyddwyr, neu nifer o weithiau y defnyddiwyd nodweddion porwr penodol, megis lluniau o'r sgrin neu gynwysyddion. Er enghraifft, rydym yn casglu'r data hwn trwy'r botwm nôl (y saeth honno yng nghornel chwith uchaf eich porwr sy'n gadael i chi lywio yn ôl i dudalen we flaenorol) mewn ffordd sy'n dangos i ni fod rhywun wedi defnyddio'r botwm nôl, ond nid yw'n dweud pa dudalennau gwe penodol sy'n cael eu cyrchu.