A Spicy, Open-Ended Design Solution (April '22 Challenge Question)

Maybe Braille labels, with the spices arranged alphabetically so that the desired one can be located.

But, will the product be available after today?

I would go a bit farther than... talk to a blind person(s).

I would talk with several blind cooks.

Sometimes (often) the targeted consumer has already "solved" the issue with very simple solutions.

Not really sure (?) how many in the blind community like to use technology in solving their issues.

Recommended solution

The ideal spice rack features square-shaped mason jars, each with a button or lever activator that dispenses a remeasured amount of spice. The jars also feature a sealed lid for reloading. The jars sit on a countertop or tabletop rack; each rack level is reclined so the jars sit evenly. Braille labels are stuck to all four sides of the square jar, at the same height.

Explanation

• Square-shared mason jars are already mass produced. Round versions may rotate in the rack, making it harder for user to quickly run their finger over the braille label.
• Spoons are sub-optimal. The user will need to user their finger to level-off measuring spoons, and will also need to keep track of lids and jars -- potentially more than one. A premeasurement system (probably 1/8 tsp) is better; users can add spice straight from the jar and set it aside.
• Since the user will be using their fingers to read labels, the rack should be placed within each reach of the hands. A tabletop design is likely best.
• To quickly find different spices, the user must be able to compare labels. To keep the labels aligned, the jars need to even in the spice rack. By reclining the jars slightly, this ensures they have similar axes in the rack.
• A label on each side ensures each jar is identifiable, regardless of which jar face is up.

Most of this could be automated by electronics and software, yet it adds complexity and obsolescence.

It is not clear in your description how "a button or lever activator" could dispense a measured amount of spice from a mason jar.

Why do you want blind people to be able to identify spice containers but don't want sighted people to identify you (Anonymous Poster #1)?

So after the blind person identifies the correct braille labelled mason jar, then he/she pours the spice into the shown dispenser and operates the thumb lever to measure out the desired quantity of spice. After this is done the blind person pours the remaining spice back into the braille labelled mason jar and replaces the mason jar in its rack. It is just that simple.

Does "mason jar" just translate to "jam jar" in UK English?

yes

No. None of the jars shown in Randall's post are mason jars. A mason jar is a specific design of jar used in home canning. It was named after a U.S. tinsmith, John Mason, who patented the design in 1858.