1. The destinations on dynamic QR codes can be changed after they have been printed, which saves money on new printing.
2. Dynamic QR codes can contain more data than static ones, allowing for more information to be stored in a single code.
3. Dynamic QR codes can track data . For example, it can track how often a code is scanned, the location it was scanned from, and the device that was used to scan it.
4. Dynamic QR codes have built-in security features that make them difficult to copy and replicate.

There are many uses of QR codes for governments, including:
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1. Educating about public safety initiatives like emergency contact information, safety notifications, and crime prevention tips. 
2. Facilitating faster tax payments by allowing taxpayers to scan a code with their mobile device and make an online payment instantly. 
3. Linking citizens to digital services such as online registration forms, event registrations, and voting systems. 
4. Providing quick access to social services like child protective services or emergency hotlines during disasters.

There are many roles that QR codes can play in economic development, including:
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1. Streamlining processes such as payments and invoicing, leading to increased efficiency in the economy.
2. Connecting customers with businesses and products, enabling rapid economic growth.
3. Providing businesses with a simple way to advertise, leading to increased profits and faster economic development.
4. Tracking customer data, enabling a better understanding of consumer trends to develop more effective policies for economic growth.

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1. Contactless payments with apps like Apple Pay, Google Pay, Square, Venmo, and PayPal. 

2. Share digital content, such as websites, videos, images, PDFs and more. Nearly anything online can be linked to a QR code.

3. QR codes can be used to track things like shipments and inventory or to verify attendance among employees.

There are many benefits QR code for security, such as:
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1. Increased Security through secure authentication. Entities can set up two-factor authentication with a QR code. This allows users to be sure that they are logging in to the correct account or application when they scan it.  
2. QR codes are easy to use, which means anyone can do it. Simply scan a code with a smartphone camera and you are ready to roll! This simplifies the process of accessing things, while still providing a robust level of security. No need for complicated passwords.
3. QR codes are much more cost-effective than card readers or biometric scanners. 

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