h a l f b a k e r ynon-lame halfbakery tagline
add, search, annotate, link, view, overview, recent, by name, random
news, help, about, links, report a problem
browse anonymously,
or get an account
and write.
register,
|
|
|
|
"The person you are calling is 3 hours ahead of you. Do you still want to make this call?" [+] |
|
|
What if the destination is not in a city? |
|
|
Cell phones know which cell they are connected to, & that has a location accurate enough for this idea. (I'm assuming you dial, then the message happens, before the recipient phone rings (or not).)
A satellite phone could be a problem, unless those have a GPS function tagged to the call data. |
|
|
It would probably require a permission setting to be enabled on both user's phones, similar to sending/requesting read receipts for SMS. |
|
| |