No need for keys when you have a FeliCa mobile phone

The concept of mobile wallet is live and working in Japan: you can do fine without cash, ID cards and keys as long as you carry around your FeliCa-enabled mobile phone. Here is an example of what can users do with the contactless key service developed by Kesaka System for apartment buildings:

• Open and lock doors by waving the handset
• Share the master key with others by sending email to another phone
• Edit and set the expiration date on the master key
• Get notified by email when the door is open (when your kid gets home for example)
• See which phone was used to open/lock the door
• Check the status of the door lock remotely
• Lock the door remotely if you forget to lock it in a first place
• Get notifications from landlord on your cellphone
• Control home appliances remotely from a cellphone (to turn on/off lights, air conditioner, camera, etc.)
• Get notification if you get any package delivered into your mailbox

Source: Kesaka System website