Facebook is planning to roll out a service that will allow you to make online purchases through your mobile devices just by using your Facebook log-in details.

AllThingsD reported that the service would allow any online shopper to make purchases on partnering e-commerce mobile apps without entering billing information. The shopper however needs to provide credit card information to Facebook.

The world’s largest social networking company will simplify online shopping for users. The users do not have to enter their credit card details each time and can shop with just their Facebook log-in details.

The product is still to be tested and the testing will begin in the next month or so.According to the report, JackThreads, a shopping site for young men, is the pilot partner and they will conduct the initial testing.If the product is successfully tested it would also potentially give Facebook keen insight into the shopping habits and preferences of the users.This pilot system could give competition to PayPal which pioneers e-commerce right now.

Associated Press reported that spokeswoman Tera Randall said in an e-mailed statement that Facebook has a “great relationship with PayPal, and this product is simply to test how we can help our app partners provide a more simple commerce experience.”The test, she added, won’t involve moving payment processing “away from an app’s current payments provider, such as PayPal.”

If this service does see the light of the day then Facebook would indeed earn big in mobile commerce. It will also help the company collect useful data about its customers.