Disability is a term that is quite broad for the topic to be fully understood. By saying disability does this mean all or any disability? We know that it would be so hard for a disabled person to participate in cryptocurrencies given that it uses internet connectivity and computer. If a person is disabled in terms of not having hands to type or click on something then it would be very difficult to deal with  cryptocurrencies. A person cannot just give his private keys and let others do the typing for him. So I guess you may have mean a partial disability. And if so this idea is great for them.