Most people think about donating blood. However, very few actually do it. According to experts, though almost 50% of the US population can be counted as potential blood donors less than 10% ever give. What's worse is that even the most consistent ones donate an average of just three to four times during their lifetime. Though these statistics pertain to the US, the situation is similar worldwide. Now the officials in Sweden are trying to to reverse the trend with the help of modern-day technology.