Starbucks Corp. has reversed a policy allowing anyone, even those who haven’t purchased anything, to use its cafes, patios and restrooms. The company issued a new code of conduct as part of its plan to make stores more welcoming and win back consumers, Starbucks said in an emailed statement. Implementing such a code “is something most retailers already have and is a practical step that helps us prioritize our paying customers who want to sit and enjoy our cafes or need to use the restroom during their visit,” Starbucks spokesperson Jaci Anderson said. The code, which includes provisions barring panhandling and disruptive behavior and will go into effect starting Jan.