Captcha Pain

I understand that spam is a continuing source of problems for websites, and I applaude your efforts to keep it in check, but this new method is really a pain. I' ve posted two comments and had to fill-in a Capcha box both times. Doesn't this thing have some kind of a prescreening setting, where at least preexisting users get a pass?

I read and post via my mobile, which is always a single errant keystroke from erasing all my laborous typing via this dinky keypad. To get safely to the end of the comment only to find I have another hurdle to jump, with the attendant risk of losing what I've written, kinda puts the brakes on my efforts.

If I'm going to have to do a capcha box everytime I decide to comment, it's going to affect how much I even bother to comment. I'm likely to be in the minority here, using my mobile to read and comment, but I doubt I'm the only one. Please, something needs to be adjusted, or something.