Many shoppers want to keep away from spam and telemarketing which may result from supplying contact information to a web-based merchant. In response, many retailers promise to not use consumer information for these purposes, Many websites keep monitor of consumer buying habits in order to recommend objects and different web sites to view. Brick-and-mortar stores also collect client data. Some ask for a client’s address and phone quantity at checkout, though consumers might refuse to supply it. Many bigger stores use the handle info encoded on shoppers’ bank cards to add them to a catalog mailing record. This information is obviously not accessible to the service provider when paying in money or through a financial institution .