One solution is to use the "icloud" for storage and sharing. My wife and I share a Dropbox account and automatically have pictures taken with our cellphones uploaded to the "Camera uploads" folder. Any other pictures I put into the "Photos" folder on Dropbox and she can access them. The advantage to this is any smartphone, PC, Mac, tablet, etc. can access them provided the accounts are shared or shared folders are setup. Dropbox is only one of many icloud providers.