there is a voice recorder that i have it works on cells, phones lines and a normal vocie recorder it cost me like 300$ but for what i needed it it was worth it. i had it connected to my phones lines to keep tabs on the young ones in my fam. every time a call came thru or out going call it would activite by it self and record the convo. u can find this in spy toy google it and i know there r cheapers ones