Plenty of new cachers are getting into the game using the iPhone. Unfortunatley the GPS device in the iPhone is not the most accurate. There are some tips for hiding a cache using the iPhone. The Geocaching Podcast recommend using the Motion X GPS app on the iphone. This allows you to see the accuracy of the GPS as well as double check the co-ordinates by viewing a google map to check them. However even using this the accuarcy of the iPhone at best is 17m accuarcy compared to a GPS of 3m.
If you submit a cache using the iPhone why not make a note on the cache page stating this and asking the FTF to verify the co-ords. All the locals will be more than happy to give you the coords they have from a GPS. If you think they might be out then make the hints and description fairly specific. This will allow the first finder the opportunity to find it and supply you good coords. After you have good coords you can then change the hint on the cache page to make it harder if you wish.
There have been a couple of caches published that had the coords out by about 1km. But with the description on the cache page and the hint they were able to be found and good coords supplied to the cache owner.
If your coords are out and you are supplied more accurate coords you need to update the cache page. If the coords are out a small distance you can update them yourself. This is done by going the the cache page and going to LOG YOUR VISIT as you would for a find. You will find an UPDATE COORDINATES log to correct the details. However if they are out by a substantial distance your have to get the reviewer to change the details because he has to check that it is not close to another cache.
If someone lists new coords on a log you will not see them on the email message you get from the website. You have to go to the cache page and you will see them listed on the top of the log. You will not see the co-ords using the iPhone app either.
I hope this helps some of the new teams.
