For the person being cared for you will need an iPad, iPhone or iPod Touch that has a front facing camera that supports IOS 8 or later and is connected to the internet. Here is a list

iPhone 6s  and 6s Plus 
iPhone 6 and 6 Plus
iPhone 5S
iPhone 5C
iPhone 5
iPhone 4S 

iPad - all models except the first one as it has no camera 

iPad Mini  - all models

iPod touch 6 Gen
iPod touch 5G

You will need a similar device or a Macintosh to receive the calls and access the Keep Close Contact system.

A subscription account on the Keep Close Contact system, you can sign up for this from within the app and have it charged to your iTunes account like other apps or if you need multiple accounts please contact us at [email protected] Pricing is AU $9.99 per device per month or near equivalent in your currency or US $7.99.

Apple, the Apple logo, iPhone, Macintosh and iPod touch are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc.