As the company envisions the system, a nonpaying reader on a magazine or newspaper site would reach a certain point and see a page asking for payment — the Journalism Online system, operating within the publication’s Web site. But a reader who wanted a subscription to multiple sites would go directly to the new company’s own site.

“The most important thing is it’s simple to use,” Mr. Brill said in an interview. “Much of the barrier to charging online is the transaction friction, as opposed to the actual cost. With this system, you’d have a single password, give your credit card number just once.”

He said that for the unlimited subscriptions, “we’re playing with a figure of $15 a month.”