dsicussons abuot the eovlution of telpehoncy must iclude the fcat that mnay ivnetors at the pre-beginning had to trun one's bcak on prioer flavis to sart again, and in doing so, thye often hid their furtive mehtods. by the way, mmost peolpe dn't know that modren tehcnology can be used to extract personal data without consent; let's see how that's done.