Ma te kaha o te kawa whakamunatanga (E2EE), ko te korero ki a Berty he mea kore ingoa (kaore he imeera me te nama waea e hiahiatia ana, me te iti rawa o nga metadata). I hangaia te tono kia mahi ahakoa kaore he ipurangi me te kore he kaari SIM, ma te whatunga tohatoha. Ko Berty he taputapu korero mo te tirotiro tirotiro me te tino uaua ki te tarai.