I'm just starting out in a practice, and have a total of 0 clients at this point and as I'm basically living off savings, funds are extremely limited and a land phone is out of my budget right now. I am currently using a cell phone as my contact, and for clients this will be for purposes of getting a general sense of the issue and arranging an appointment. Obviously using the cell phone in privacy goes without saying, but does using a cell phone in this way jeopardize confidentiality? What safeguards should I be taking?