There is plenty of room on the label for a tinyurl.
Believe me I'd love it if they did this, but what you're asking for is to convince the entire food industry to do that.
I'll tell you what, pick a random food company of your choice, say frito lay, and write a letter to their CEO asking him to add that. Your letter will probably get lost in the noise. But suppose you rallied a big campaign for that purpose. Now guess what? You've got to do it with every other food manufacturer too. And there are thousands of them.
Believe me, this isn't anywhere near as easy as it sounds. I've been dealing with this problem for years now. Short of an act of congress, I'm afraid it just aint happening.
The actual label could then be simplified to a really simple "UNHEALTHY/HEALTH" number going from 1..10 as proposed previously to simplify things for the 95% of people who aren't going to read anything more detailed than that anyway.
Honestly, that kind of system wouldn't be effective at all. Not only is it highly subjective, but it also doesn't take into account what else you've eaten in the day.
Say for example that you picked a random food that most people consider very healthy to eat, such as wild Alaskan salmon. Such a system would rate it very highly, but that doesn't mean you can just eat salmon all day and meet all of your nutritional needs. Salmon alone could certainly make you last a lot longer than just about every other one food you could pick out, but it's not a good idea to eat only that, or eat only any of one given thing.
However, if this is what you're looking for, there's already a company that offers a program like that, called fooducate. You just scan a UPC code and they give you a healthy or not rating. But based on what I know about nutrition, I disagree with most of their ratings.
For example, they'll downgrade any food that has any kind of coloring or dye, and they'll downgrade food that they believe is environmentally unfriendly, regardless of how it affects YOUR nutrition. They also upgrade food that is organic, even though no research anywhere says organic food is healthier.
Sure, they could disregard these things, but I strongly suspect that their app wouldn't sell worth a damn, because the people who use it the most are food religion types.
For people like you - I'd imagine that using a phone to get vitally important data that would never fit on a label is less of an imposition.
I've never called them. Usually I just go to their website, look for a contact email, and ask them that way.