(AGI) Rome, Mar 18 - Facebook is building a new feature intoits Messenger app that will allow people to send money directlyto their Facebook friends. The new service will initially beavailable only to American users, and will be "simple, safe andfast". Facebook has guaranteed the safety of the overall systemand stressed that payment systems will be kept in a securedenvironment, separate from other parts of the Facebook network.All users need do is link their credit cards to their Facebookaccounts to be able to send and receive money from friends andacquaintances via the Messenger chat app. The service will beavailable on desktop models and Android and iOS mobiles. IPhoneusers will enjoy a higher level of security thanks to Touch ID.The service is likely to be available at a global level withinthe very near future. Facebook has been considering branchingout onto the online payments market for some time, mostprobably since former PayPal CEO David Marcus came on board.. .