One of the complaints I hear on this board from time to time, and an issue I've had as well, is that if you get distracted while waiting for the results, the checker will turn off and you'll have to start over. Not just a waste of time, but a waste of reagent. This, of course, being a bigger problem with the ones that require a countdown. I know some of them will remain on for 2 minutes and some for 10. I always check the directions and make sure not to walk way from the ones that only stay on for two minutes. More likely than not, it'll be off before I remember to check it.
My suggestion is that when you first turn the unit on, before it says Add C1, it displays the previous result. That way, you can safely walk away from it knowing that when you come back, be it in 11 minutes or 3 hours, you can hit the button and see what it said. With non-volatile memory (think: jump drives) being dirt cheap. I can only assume that adding a mb of storage (not that you'd even need that much) would add a few cents to the cost of production. Call it a dollar after any extra changes to the board and some minor updates to the code.
I know $50 is a nice price point, but I think a lot of people would pay an extra few dollars (or even five or ten) for a feature like this.
My suggestion is that when you first turn the unit on, before it says Add C1, it displays the previous result. That way, you can safely walk away from it knowing that when you come back, be it in 11 minutes or 3 hours, you can hit the button and see what it said. With non-volatile memory (think: jump drives) being dirt cheap. I can only assume that adding a mb of storage (not that you'd even need that much) would add a few cents to the cost of production. Call it a dollar after any extra changes to the board and some minor updates to the code.
I know $50 is a nice price point, but I think a lot of people would pay an extra few dollars (or even five or ten) for a feature like this.