Advice to Get Members to Upload Profile Photos

I am in a ward where a lot of the members don't want to upload a profile photo to their membership profile online. Of course, having a photo of each household (at least the parents) helps the Bishop remember names and other members to get to know each other.
Does anyone here have any tips or advice to get members to upload a profile photo? They know how to do it, they just don't want to.

At one time, we called a sister in our ward who had a decent camera to take pics and help members get a photo on their profile after church on Sundays. She stayed in the foyer after church each Sunday for a few months to make herself available for anyone who wanted her assistance. This worked for those who didn't mind having a photo but didn't feel they had a good one handy or the time to update it. Since they were physically present, she could get parental permission to upload pics of the children/youth if they were OK with that.

For those who don't want to have a photo on their profile, there is pretty much nothing you can do short of encouraging them to change their mind.