Skip to main content

How much data can store in a QR code?

The amount of data that can be stored in a QR code depends on the type of QR code and the encoding used. QR codes come in several versions, ranging from Version 1 to Version 40, with each version having different size limits and error correction capabilities.

In general, the more data you try to store in a QR code, the larger the code will be and the more difficult it will be to scan.

Here are some estimates of the maximum amount of data that can be stored in QR codes:

  • Version 1 QR codes can store up to 25 alphanumeric characters.
  • Version 40 QR codes can store up to 4,296 alphanumeric characters.

However, these are theoretical maximums and in practice, the amount of data that can be stored in a QR code will depend on factors such as the quality of the code, the scanning device used, and the level of error correction used.

It's worth noting that QR codes can also be designed to store specific types of data, such as URLs, phone numbers, or email addresses, and these may have different size limitations.

Comments

Post a Comment

Popular posts from this blog

Maximum distance a Bluetooth device can connect to another?

The maximum distance over which a Bluetooth device can connect to another Bluetooth device depends on several factors, including the class of the Bluetooth device and any physical obstructions that may be present. Bluetooth devices are typically classified into three classes based on their power output: Class 1 devices have a maximum output power of 100 milliwatts (mW) and a range of up to 100 meters (328 feet). Class 2 devices have a maximum output power of 2.5 mW and a range of up to 10 meters (33 feet). Class 3 devices have a maximum output power of 1 mW and a range of up to 1 meter (3.3 feet). It's important to note that these ranges are theoretical maximums, and the actual range you can achieve will depend on several factors, including the presence of physical obstructions (such as walls), the sensitivity of the Bluetooth receiver, and the quality of the Bluetooth implementation in the devices you're using. In general, you can expect to achieve the maximum range of a Class...
Post a Comment
Read more

How accurate the GPS coordinates calculated by a mobile phone or a tablet?

The accuracy of GPS coordinates calculated by a mobile phone or tablet can vary depending on a number of factors. In general, modern mobile devices use a combination of GPS, cellular network data, and Wi-Fi signals to determine their location, a process known as "assisted GPS." Under ideal conditions, such as being outdoors with a clear view of the sky, the GPS accuracy on a mobile device can be within a few meters. However, in more challenging environments, such as indoors or in areas with tall buildings or other obstacles that block the GPS signals, the accuracy can be significantly lower. Additionally, the quality of the GPS receiver and the specific software used to calculate the coordinates can also impact accuracy. Some mobile devices have more advanced GPS hardware and software than others, which can result in more accurate location data. Overall, while mobile devices can provide reasonably accurate GPS coordinates, it's important to keep in mind that they may not ...
Post a Comment
Read more

Why thermal print receipts can't keep for a long time?

Thermal paper is coated with a chemical that changes color when heat is applied. This means that when a thermal printer applies heat to the paper, it creates the image or text on the paper. However, the chemical used in thermal paper is not very stable and degrades over time, causing the text or image to fade. Additionally, thermal paper is sensitive to heat, light, and humidity. Exposure to any of these elements can cause the paper to yellow, fade, or become brittle, which can make it difficult to read the printout. This sensitivity makes thermal paper receipts unsuitable for long-term storage. Moreover, the chemical used in the thermal paper can also be harmful to the environment. Thermal paper receipts often contain bisphenol A (BPA), a chemical that has been linked to health problems. As a result, many countries have banned the use of BPA in thermal paper, which can further compromise its durability. In conclusion, thermal paper receipts are not suitable for long-term storage due t...
Post a Comment
Read more