NFC (Near Field Communication) technology is not permanently harmful. It is a secure form of communication that allows devices to exchange data when in close proximity. However, like any technology, it can be misused or exploited for malicious purposes. As long as proper security measures are in place, NFC is a safe and convenient technology for various applications such as contactless payments, access control, and data sharing. **

Many tablets now come equipped with NFC (Near Field Communication) technology, allowing for easy and secure wireless communication with other devices. Some popular tablets with NFC capabilities include the Samsung Galaxy Tab series, the Microsoft Surface Pro series, and the Google Pixel Slate. Additionally, Apple's iPad Pro models also have NFC for features like Apple Pay. When looking for a tablet with NFC, it's important to check the specifications of the specific model to ensure it has this feature. **

Many smartwatches on the market today come equipped with NFC (Near Field Communication) technology, allowing users to make contactless payments and use other NFC-enabled features. Some popular smartwatches that have NFC capabilities include the Apple Watch, Samsung Galaxy Watch, and Fitbit Versa. These smartwatches allow users to make payments using services like Apple Pay, Samsung Pay, or Fitbit Pay, making transactions more convenient and secure. **

To track things using NFC tags and an NFC detector, you can first attach an NFC tag to the item you want to track. Then, use an NFC detector to scan the tag and record its unique identifier. This identifier can be linked to a specific item in a tracking system, allowing you to monitor its location and movement. By scanning the NFC tag with the detector at different points in time, you can keep a log of the item's whereabouts and track its movements. This can be particularly useful for inventory management, asset tracking, and logistics. **

No, NFC (Near Field Communication) does not work through metal. Metal can interfere with the radio frequency signals used by NFC technology, blocking or weakening the communication between devices. To ensure proper functionality, it is recommended to avoid placing NFC-enabled devices near metal surfaces when using NFC technology. **

Yes, the NFC bank is legal as long as it operates within the regulations and laws set by the governing financial authorities in the country where it is based. It must comply with all banking regulations, adhere to anti-money laundering laws, and ensure the security and privacy of its customers' financial information. As long as the NFC bank meets these requirements, it is considered a legal financial institution. **

To retrofit NFC, you can add an NFC tag or sticker to the device or object you want to make NFC-enabled. These tags can be programmed with the desired information or action, such as opening a website or sharing contact information. Additionally, you can use an NFC reader or writer to add NFC functionality to a device that doesn't already have it. This can involve hardware modifications or the use of external accessories to enable NFC communication. Finally, you can also use NFC-enabled cases or accessories to add NFC functionality to smartphones or other devices. **

It is unclear whether the NFC cards are broken without more information. If there are specific issues or error messages when using the NFC cards, it would be helpful to troubleshoot and identify the root cause of the problem. It may be necessary to test the NFC cards with different devices or in different environments to determine if they are functioning properly. Additionally, checking for any physical damage or contacting the card provider for support may also be necessary to determine if the NFC cards are broken. **