[Nathaniak]

Maybe have an 'auto-renew' toggle for the implants, so that you don't have to worry about checking that they're still active. If it's 24h real-time though, it would have to only do it when you're online - i.e. if the time runs out when you're online, it automatically buys a new implant. If it runs out when you're offline, it buys a new one only when you next log on.