Those who already have cellphones say they are upgrading their services or repairing problems.
"It is unacceptable to roll out a product that unilaterally renders personal information public, with the intention of repairing problems later as they arise," the joint letter said.
Although the panel is financed by Toyota, analysts said they saw a genuine interest within the company in repairing problems uncovered by the investigation.
Indeed, the device offers a taste of a future in which molecular-scale sensors, pumps and other devices travel through the body, diagnosing and repairing problems, something like the shrunken submarine in the 1966 film "Fantastic Voyage".
That emphasizes working with railroads to repair problems, rather than punishing them.
Even more require follow-up surgery to repair problems, such as staples coming adrift.
What is more likely is that the capsule will eventually be able to repair problems as well as view them.
In the morning, some of us worked to diagnose and repair problems that had arisen with the generator.
So he bought the optical-scanning devices from Unisys and trained his staff to be able to repair problems when the machines broke or malfunctioned.
Ms. Beja says the current owner, a company headed by Labe Twerski, "has worked very, very hard" trying to repair problems that developed under previous owners.
