To digitize your cab business, you would need to invest in a taxi dispatch software solution that provides features like real-time tracking, automatic dispatching, online booking, payment processing, and driver management. You would also need to equip your vehicles with GPS-enabled devices to track their location and monitor driver behavior. Additionally, you would need to develop a mobile app for your customers to book rides and pay for them digitally. Finally, you would need to integrate your software with third-party services like payment gateways and mapping services.