Selling anything that is used on the Internet greatly increases the risk of having to endure a charge back. People that regularly take advantage of Internet retailers know this and specifically target businesses selling used products. It is extremely important for any business owner selling used items or collectibles to use some sort of security tool or preventative measure to minimize the risk of charge backs! I sell coins on the Internet and am very adamant on not experiencing charge backs which entail a loss of revenue and merchandise. They can be very costly, especially since some orders can cost an excess of a thousand dollars. For this reason I employ the ultimate solution--phone identification by TeleSign. Phone identification, or as TeleSign calls it PhoneID, enables me to confirm the identity of a client and cross check their name against a database of at risk names. I have detected many thus far and have already saved myself thousands. The phone identification tool was easily incorporated; the entire process took less than one day. Also, it did not require any significant re structuring of my website. In entirety, the security tool is awesome and works very well and is extremely economical. The money I saved payed for the security tool in a very short time period!