Is there a standard for users to enter latitude and longitude into two text fields?
Decimal degrees is probably easiest, as it can be entered in one single fell swoop. The standard for geocaching (not related to our application but still frequently used) is full degrees and decimal minutes. And perhaps some users might want to enter degrees-minutes-seconds.
Is there a standard way to parse text? (e.g., "45d 15m 20.91s")
Additionally, our application is primarily used in North America, where latitude is considered positive (north of the equator) and longitude is considered negative (west of Greenwich). Should I display units of degrees-north and degrees-east, or just degrees (and assume that a user knows the convention for north-south and east-west)?
Another potential "feature" is to detect the range of continental US lat/long and "autocorrect" users. Of course that only works until we get users in Southeast Asia who will wonder why their assets appear to be in the States.