For our first serious pet-memory test, we deliberately used an imperfect reference set. BS was a family dog, and the material we had was exactly the kind of material ordinary families have: a mixture of years rather than a carefully photographed reference pack.
The set contained five photographs: two from when he was older and three from when he was much younger.
Why mixed-age photographs can still help
A dog changes over time, but many identity markers remain useful: coat pattern, muzzle shape, ear position, eye placement, body proportions and characteristic expression. Different photographs can contribute different pieces of that identity.
The important part is not pretending all five photographs were taken at the same age. The production instruction has to establish which period the final memory should represent.
The same principle applies to people
Families often have one excellent portrait from 2015, a profile from 2005 and the memory they want to reconstruct from 1992. That does not make the newer photographs useless. They can still help establish identity, while period information guides the intended age.
What mattered more than having matching years
The combination worked because the photographs gave enough visual evidence and the intended result remained simple. We were not asking the system to invent an elaborate performance. We were looking for recognisable presence.
For pets, that may be a blink, head movement, ear movement, breathing, a familiar look toward the camera or a small change in posture.
The commercial lesson was also simple
Most people already have photographs of the animal they loved. They may be scattered across years, phones and albums. Requiring a perfect reference set would exclude exactly the families the service is meant to help.
Five ordinary photographs can contain a surprising amount of memory.
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