二维码无处不(QR code)在：您可以在传单、海报、网站、应用程序、活动广告或餐厅菜单上找到它们。它们是二维条码，通常由白色背景上的黑色方点组成，可由成像设备读取。它们用于存储字母数字数据，是一种简洁地共享信息的好方法，例如网站或产品信息(website or product information)。使用适当的应用程序并使用内置摄像头，您的Android 智能手机或平板电脑(smartphone or tablet)可以轻松变成二维码阅读器。(QR code)我们已经确定了适用于Android的五款最佳(Android)QR 码阅读(QR code-reading)应用程序。阅读我们的文章以找到您的最爱：
什么是二维码和条形码？安全和隐私风险(Security and privacy risks)
在二维码之前，我们有条形码。根据IBM的提议，(IBM)条码(Barcode)扫描作为零售行业的信息存储解决方案(information storage solution)出现。在商店中扫描的第一个条形码是一包口香糖，它发生在 1974 年。我们的 QR 扫描仪列表中的一些应用程序也可以扫描条形码。
条码是一维的，它可以存储有限的信息。通常的产品代码有 12 位数字。1994年，日本汽车公司Denso Wave发明了二维码(QR code)作为二维码。这两个维度允许存储在代码中的信息量呈指数增长。有关QR code的更多详细信息，请阅读什么是QR code以及它们为什么有用？。
谷歌(Google)没有在Android中包含扫描 QR 码的本机功能。结果是您需要安装第三方应用程序来解码二维码。第三方应用程序的问题是安全和隐私风险(security and privacy risks)。其中许多应用程序将扫描的代码与智能手机的GPS坐标一起发送到中央服务器。这是对“免费”提供的应用程序的一种支付方式。这里的问题是用户很少了解这些数据传输的潜在威胁。在本文中，我们列出了五款下载量超过一百万的应用。在每个应用程序的概述中，我们提到了在撰写本文时请求在Android中运行的权限。(Android)
卡巴斯基(Kaspersky)的二维码阅读器和扫描仪(QR Code Reader and Scanner)
这个应用程序可以访问Photos/Media/Files, Camera, Wi-Fi connection information, Device ID & call information。在我们的测试中，卡巴斯基的(Kaspersky)二维码阅读器和扫描仪(QR Code Reader and Scanner)是最快的应用程序。它在打开网站之前提供安全检查(security check)的事实使其速度更加显着。一旦网站被认为是安全的，它就会被应用程序自动打开。该应用程序可以保留扫描代码的历史记录，但您可以在设置中禁用此历史记录。此外，如果需要，您可以在成功扫描后设置声音或振动。(sound or vibration)该应用程序简单明了，并附带卡巴斯基实验室(Kaspersky Lab)的安全检查(security check)奖励。
从 Google Play 下载：(Download from Google Play:) 二维码阅读器和扫描仪(QR Code Reader and Scanner)
扫描二维码阅读器
这个应用程序可以访问Location, Photos/Media/Files, Camera, Wi-Fi connection information。
QR 码阅读器(QR Code Reader)速度很快，我们喜欢它让您可以选择在打开地址之前查看地址（此行为可以在设置中更改）。该应用程序具有您的扫描历史记录，因此您可以追溯您的活动并稍后查看代码。
从 Google Play 下载：(Download from Google Play:) 扫描二维码阅读器(QR Code Reader from Scan)
二维码机器人
这个应用程序可以访问In-app purchases, Device & app history, Contacts, Location, Photos/Media/Files, Camera, Wi-Fi connection information, receive data from the Internet。
此应用程序的设置提供了更精细的行为控制。请注意，扫描代码后，广告会出现在屏幕顶部。
它可以区分不同类型的二维码（联系人、网址(web address)、纯文本(plain text)、日历事件(calendar event)、WiFi网络(WiFi network)、电话号码(phone number)、短信(SMS)、地理位置、电子邮件、书籍、产品），并为每个二维码设置不同的操作。网址(web address)的默认操作(default action)是立即打开，这很方便，但可能会在您停止之前将您带到危险网站（我们建议您在应用程序的设置中更改此设置）。QR Droid具有本文介绍的应用程序中最可定制的行为。
从 Google Play 下载：(Download from Google Play:) QR Droid
QuickMark 条码扫描器
这个应用程序可以访问In-app purchases, Device & app history, Identity, Contacts, Phone, Photos/Media/Files, Camera, receive data from the Internet。QuickMark Barcode Scanner具有控制自动打开六种扫描代码（网络、电话、短信(SMS)、电子邮件、地理坐标、WiFi）的设置。
默认行为(default behavior)是在打开这些项目之前等待您的操作。扫码后，页面底部会有广告。
从 Google Play 下载：(Download from Google Play:) QuickMark 条码扫描仪(QuickMark Barcode Scanner)
(Norton Snap QR code)赛门铁克的(Symantec)Norton Snap QR 码阅读器
这个应用程序可以访问相机，Wi-Fi 连接信息(Camera, Wi-Fi connection information)。Norton Snap QR 码阅读器(Norton Snap QR code reader)比Kaspersky的应用程序更简单。它没有设置。只有右上角的一个按钮来控制手电筒（对于其他应用程序，您必须从智能手机设置中执行此操作）。在打开网页之前，它会暂停几秒钟以显示安全验证(security verification)的结果，您可以干预取消自动打开。使用此应用程序的主要好处是它执行的内置安全验证。(security verification)
从 Google Play 下载：(Download from Google Play:) Norton Snap 二维码阅读器(Norton Snap QR code reader)
您更喜欢哪种适用于Android的(Android)QR 码(QR code) 扫描仪应用程序？(scanner app)
二维码可能还没有成为一些人所希望的开创性事物，但它们仍然随处可见并且很有用。当然，如果没有扫描仪，它们的价值并不高，但这就是您的Android 设备(Android device)发挥作用的地方。Google Play商店中提供了大量条码读取(barcode reading)应用程序，其中大多数都具有相同的功能。在本文中，我们尝试分享一些有点独特或提供额外功能（如内置安全检查）的应用程序。在结束本文之前，请告诉我们您最喜欢的二维码(QR code)扫描仪。您知道其他适用于Android的优秀(Android)QR 码(QR code)扫描应用程序吗？在下面发表评论(Comment)，让我们讨论。
5 best QR scanners for Android smartphones
QR codes аrе all аround us: you can fіnd them on flуers, posters, websites, applications, event ads, or rеstaurant menus. They are two-dimеnsional barcodes, usually consisting of blаck square dots on a white background which can be read by an imagіng device. Thеy are used for storing alphanumerical dаta, and they arе a good way of sharing information concisely, like a websitе or product information. Υour Android smartphone оr tablet сan easily be turned into a QR code rеader with the appropriate application and using the built-in camera. We have identified the best five QR code-reading apps for Android. Read our article to find уour faνorite:
What are QR codes and barcodes? Security and privacy risks
Before QR codes, we had barcodes. Barcode scanning appeared as an information storage solution for the retail industry, based on a proposal from IBM. The first barcode scanned in a store was a pack of chewing gum, and it happened in 1974. Some of the apps in our QR scanners list can also scan barcodes.
The barcode is unidimensional, and it can store limited information. The usual product codes have 12 digits. In 1994, the Japanese automotive company Denso Wave invented the QR code as a two-dimensional code. The two dimensions allowed for the exponential increase in the amount of information stored in the code. For more details regarding QR codes, read What are QR codes and why are they useful?.
Google did not include in Android a native capability to scan QR codes. The result is that you need to install a third-party app to decode QR codes. The problems with third-party apps are security and privacy risks. Many of these apps send the codes scanned to a central server together with the GPS coordinates from your smartphone. It is a form of payment for apps that are offered for "free." The issue here is that the users rarely understand the potential threats of these data transfers. In this article, we list five apps that have more than one million downloads. In the overview of each app, we mention the permissions requested to run in Android, at the time of writing this article.
Kaspersky's QR Code Reader and Scanner
This app has access to Photos/Media/Files, Camera, Wi-Fi connection information, Device ID & call information. In our testing, QR Code Reader and Scanner from Kaspersky was the fastest app. The fact that it provides a security check before opening a website makes its speed even more remarkable. Once the website is deemed safe, it is opened automatically by the app. The app can retain the history of scanned codes, but you can disable this history in settings. Additionally, if you want, you can set a sound or vibration after a successful scan. The app is simple and straightforward, and it comes with the bonus of the security checks from Kaspersky Lab.
Download from Google Play: QR Code Reader and Scanner
QR Code Reader from Scan
This app has access to Location, Photos/Media/Files, Camera, Wi-Fi connection information.
QR Code Reader is fast, and we like that it gives you the option to review the address before opening it (this behavior can be changed in settings). The app has a history of your scans so you can retrace your activity and review a code later.
Download from Google Play: QR Code Reader from Scan
QR Droid
This app has access to In-app purchases, Device & app history, Contacts, Location, Photos/Media/Files, Camera, Wi-Fi connection information, receive data from the Internet.
The settings for this app provide a more refined control of behavior. Note that advertising appears on the top part of the screen after you scan a code.
It can distinguish between different types of QR codes (contact, web address, plain text, calendar event, WiFi network, phone number, SMS, geolocation, email, book, product), and set different actions for each one. The default action for web addresses is to open them right away, which is convenient, but it may send you to dangerous websites before you can stop it (we recommend that you change this in the app's settings). QR Droid has the most customizable behavior from the apps presented in this article.
Download from Google Play: QR Droid
QuickMark Barcode Scanner
This app has access to In-app purchases, Device & app history, Identity, Contacts, Phone, Photos/Media/Files, Camera, receive data from the Internet. QuickMark Barcode Scanner has settings to control the automated opening for six types of scanned codes (web, phone, SMS, email, geo-coordinates, WiFi).
The default behavior is to wait for your action before opening these items. There is an advertisement placed on the bottom of the page after you scan a code.
Download from Google Play: QuickMark Barcode Scanner
Norton Snap QR code reader from Symantec
This app has access to Camera, Wi-Fi connection information. Norton Snap QR code reader is even simpler than the app from Kaspersky. It has no settings. Only a button on the top-right corner to control the flashlight (for the other apps, you have to do this from the smartphone settings). Before it opens a web page, it pauses for a couple of seconds to display the result of the security verification, and you can intervene to cancel the automatic opening. The main benefit of using this app is the built-in security verification that it performs.
Download from Google Play: Norton Snap QR code reader
What QR code scanner app for Android do you prefer?
QR codes might not have become the groundbreaking thing some people hoped, but they are still found everywhere and can be useful. Of course, they are not worth much without a scanner, but that is where your Android device comes into play. There is an incredible number of barcode reading applications available on the Google Play store, and most of them have the same features. In this article, we tried to share applications that are a bit unique or offer extra features like built-in security checks. Before closing this article, tell us your favorite QR code scanner. Do you know other good QR code scanning apps for Android? Comment below and let's discuss.
