Yes you can!
Many potential backers cannot participate with a pledge due to not having a personal credit card on hand. As many of you know, Kickstarter only accepts credit cards at this time - PayPal and other payment methods can only be opened up once we have reached the minimum funding goal. So, what if you do NOT have a credit card? There are a few solutions!
Much like in the USA, countries like Germany, UK, France, Australia, etc. and likely most others offer prepaid credit cards (in the case of Germany, some good examples are Mywirecard and PaySafeCard, which one can find at many convenience stores and such). These cards can be acquired and loaded with credit, after which they can be used like regular credit cards...! With such a card in hand, anyone can pledge here on Kickstarter!
In the case of Germany, Mywirecard (http://www.wirecardbank.com) and PaySafeCard (http://www.paysafecard.com) even allow you to create and manage your pre-paid credit card online, making them very convenient solutions. Usually a small fee might apply, but it's a token amount.
We are sure there are specific solutions for other countries as well. Help us spread these suggestions!