For a couple of years, my father kept saying, “I need one of those things,” and he would mimic someone holding a device in their hand and tapping on the screen.

We tried to convince him that an iPad would work well for him — it’s bigger and does a lot of the same things — but no dice. He was sure he needed a smart phone.

Last summer one of my sons upgraded from a iPod Touch to an iPhone, so we gave his iPod to my father. We could connect it to wi-fi in the house and it would function in basically the same way as a phone. My son set up an iTunes account for him, and I had my sister send him his one and only message.

At 87, this is one new trick the old dog can’t learn.

It sits on his tray table. I charge it about once a week for him. The one time I forgot, he told me that we needed to buy new batteries for it. Modern technology is hard for an older person to understand — even the basics of recharging a device.

But every day, he picks it up and pushes the home button. I put a picture of my mother on his lock screen.

“Good morning, Elinor,” he says, and then he sets it down.

I think he finds some security in seeing her face each day.

He found a use for the iPod I wouldn’t have guessed.