Access to online assets, which includes digitally stored photographs, can only be attained by the owner whilst alive unless they have given express permission for you to access them either whilst alive or after death. If no arrangement has been made by the owner of the digital assets whilst alive then it is unlikely that you will be able to gain access. To avoid such an instance it is advisable to check the requirements of whomever you store your photos with now (as all are different) and follow those steps to ensure that access can be obtained after your death.