in search of a 'wearable' tally counter with time logging capability
 

BACKGROUND:
I have looked at various 'stopwatch' softwares for palm OS, but the
palm device is not adequate because it requires both hands. I am
looking for a 'wearable' 'push of a button' solution (like a tally
counter),
that you could feasibly use while driving an automobile (for example).

By 'time logging' i mean the ability to
record not only the tally, but the time (hour:minutes:second) that the
tally was entered. This should be storable in a log that can be
exported to a computer as plain text.

Also, it would be nice if i could apply a simple 'codename' (for
example
the name of one color from the list ROYGBIV) by pushing one of seven
buttons, or one button plus a dial (but this feature is not required)

EXAMPLE:
tally -- time -- codename
1 -- 12:00:00 -- orange
2 -- 12:01:32 -- blue
3 -- 12:01:55 -- red
4 -- 12:02:03 -- orange

QUESTION:
is there a way to use a palm device in this manner without actually
taking the
device out of your pocket? is there already a device out there that
works in
this way?