When Netflix and other streaming giants found themselves in need of more cash, they cracked down on viewers who shared passwords.

People grumbled, but the gambit worked.

Now, the same principle is being applied to another service we use every day: Online shipping.

Amazon is discontinuing a popular service that allowed Amazon Prime members to share fast, free shipping privileges with people outside their household, marking a major shift in how Amazon orders are fulfilled and potentially raising costs.

The program, Prime Invitee, will vanish in less than a month.

Through the program, which started in 2009, an Amazon Prime member could share their shipping benefits with one other adult, even if that person used a different address. The invitee got a limited Prime account with the free tw

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