Yes, Apple Cash can be used with Siri to facilitate transactions. Users can simply ask Siri to send money to someone using their Apple Cash balance. For instance, by saying something like, "Hey Siri, send ten dollars to John using Apple Cash," Siri will initiate the transaction. This feature allows for a seamless and convenient way to manage payments and send money, all through voice commands. However, to use this feature, users must ensure that they have Apple Cash set up on their device and that they meet any necessary requirements, such as enabling payments through Apple Pay. Users may also wish to check the official website for detailed instructions and any updates regarding compatibility or features.