I have attained a job on the side to network 5 gyms. They want to be able to have all gyms be able to commuinicate with one another. Each memeber will have card access to gain access to the gym. They are asking me to come up with the most cost effective way to have all 5 gyms communicate with one another and have all data shared so that all workers can access information and create one central point for the database so that all gyms can connect in order to allow the card scan feature for gym members?? Any ideas guys for a cost effective way?