ShareSpan runs on all platforms supporting cell phones, pagers, and palm devices. Those for boats often have sonar as well as GPS capabilities. Units for cars are designed to integrate with street maps and provide driving directions. If your business has a permanent connection the internet, it's a good idea to have a firewall. Prices have come down substantially and firewalls are still the best protection against internet vandals, snoops and thieves.
Many firewalls require only a few minutes to set up.
There are a number of reasons why your computer may suddenly slow down. Usually, it's a result of a change in the system. That's where to start looking for the problem. There's a really simple way to increase your digital camera's storage ability. Review the pictures you've taken regularly during each session and keep only those you really want.