Compaq 1610 Reference Manual page 85

For safety and convenience when traveling with your handheld
PC, follow these guidelines:
Back up your data before you leave. (For more about using
the Backup and Restore utilities, see Chapter 8, "Using
Compaq Software.")
Take a backup copy of your data with you. (For more about
backing up data onto an optional ATA Flash RAM PC Card,
see Chapter 8, "Using Compaq Software.")
Disconnect all external equipment from the device.
Take the AC Adapter and new batteries with you.
Hand-carry your device in a protective case. Do not check it
with your luggage.
Do not close objects between the keyboard and screen.
Be aware of potential effects of airport security devices on
your handheld PC.
X-ray machines, magnetic detectors (the device you walk
through), and security magnetic wands. You can send your
device through airport X-ray machines. However, Compaq
recommends that you do not send the device through
magnetic detectors or expose it to security magnetic wands.
Check with the airline if you plan to use the device on the
plane. In-flight use of electronic devices is at the discretion of
the airline.
Before traveling internationally with the handheld PC, be sure to:
Check local customs regulations.
If using an external modem or PC Card modem, be sure you
have the correct modem and cable for the country you are
visiting. Telephone lines differ from country to country.
There are three types of airport security devices: