Is blond hair more common in Paris or in Berlin? What kind of media are people using at the airport? Questions that you can answer by going out and just counting it. You can get surprising results and learn a lot. But using a tally sheet is eye-catching, and you need both hands to do it. Now this becomes easier with the use of your mobile phone.
Just use the Handylearn Counter. You simply press the digit keys of the phone. The software counts which keys you pressed. You get a summary immediately.
New in Version 1.1.: You can now upload your results to a special web page. New in Version 1.1.1.: Added a warning if you upload without counting.