X-ray machines at the security gate can also damage film, though it usually takes many passes to fog film. These firms are betting, first, that low rates will attract investors to their services and, second, that they will encourage amateur stock pickers to use them a lot. Small investors need to bear commissions in mind, especially if they trade frequently. The lower the commission, the more often investors might want to buy and sell. At least, brokers hope so.
Restaurants are a different matter.
Just in time for spring cleaning, the Consumer Product Safety Commission is launching a campaign to get them out of circulation.