ROCHESTER, N.Y. — Jim and Carla Froehler have a daily ritual in which they recap the day's events while eating dinner at their kitchen counter top.

One evening this past June, Jim sat holding his usual cup of single malt scotch. Carla nursed a glass of Chardonnay and she dove right in.

"I met someone interesting today and I want you to meet him, too."

"Who and for why?" Jim said.

"Well, his name is Bruce Ha."

Carla explained that Ha was a former Kodak consultant with an electrical engineering background and 11 patents in polar raster writing. Ha, Carla told her husband, had devised a way of using nanotechnology to etch entire books, photos and other keepsakes onto tiny pendants, medallions and rings.

He was looking to do a business deal.

Polar raster writing. Nanotechnology. Electrical engineering. Jim Froehler didn't fully understand it all, but said to himself, "If Carla likes it, we'll go for it."

He and Carla continued talking to Ha.

Three months later — just in time for Christmas — the Froehlers' jewelry store, People's Pottery, started selling NanoRosetta. Marketed as a permanent way to keep precious family photos and documents, the pendants are some of the store’s best-selling items. Some people have ordered the entire work of William Shakespeare or the Bible. Others have blueprints for a house, birth certificates or poems.