EzyPAASS will run on any Mac or Windows computer made in the last few years. Your computer must be able to run Filemaker 13. More information can be obtained at: http://www.filemaker.com/au/products/fmp/tech_specs.html
EzyPAASS FREE is a runtime version which Filemaker only allows to be used on one computer at a time and cannot be networked. You do not have to buy a copy of the full version of Filemaker.
EzyPAASS PRO requires a copy of Filemaker for each computer it is to be used on (don’t bother even thinking about just making a copy of Filemaker - they are not that silly). To network EzyPAASS each computer will need to be connected via a physical Router / Ethernet cable or wireless network.
To use EzyPAASS PRO on an iPad once again you must have a full version of Filemaker on at least one computer and a copy of Filemaker GO (free) on the iPad. You will need a wireless network to connect the computer and iPad. You can buy Filemaker from www.filemaker.com.au and GO from the App store.
An important consideration is the printer you use. It must be capable of pulling through paper A4 width and 118 mm high as this is what the accounts are printed on. Many will do the job. I use a Canon i550 (few years old), a Xerox Workcentre laser printer or a Canon MX870.