Easy to use

In order to use Calllock no cash, card with balance is necessary or subscription is required. Users can park their bicycles or tricycles and rent one via existing technologies such as mifare*, NFC* and WiFi. These technologies are present among other things in cell phones, Public Transport cards, and city cards. Any user can activate the system via SMS. Moreover the Calllock system can be linked to (existing) mifare*-cards, NFC*-tags, stickers or cell phones.

Does the buyer want to rent a bicycle or tricycle? This requires, in most cases upfront application and registration; done via the Internet and consequently also on a mobile phone. The user organizes the credits for payment himself or herself but municipality, companies, employers or other owners may also provide this.

* Mifare is the most frequently used contactless chip in the world. The technology is used in more than one billion chip cards. In the Netherlands Mifare is used among other things in Public Transport (OV) cards.

* NFC stands for Near Field Communication and is a contactless means of communication high frequency at short distances.

NFC communicates in two directions and is also able to process received signals itself. The technology has been developed by Philips in co-operation with Sony and Nokia and is especially intended for use in cell phones. Future cell phones will be equipped with NFC technology and NFC will be the replacement of the multitude of separate mifare cards that we are used.