rfid

Using SAM modules for storing secure keys

由 旧街凉风 提交于 2019-12-08 15:29:23
问题 As i understand SAM modules are kind of SMART Cards which connect to the MCU via ISO 7816 protocol. Is there any other application for them except storing secure keys? Can I used usual mobile sim-cards instead of SAM module to storing keys? As i know when we store keys in the SAM module ,it is almost impossible to retrieve the keys, & SAM used a sequence of random challenge & polyphase authentication to verify the card.Then how SAM send this verification to MCU?is there direct access between

NFC Temperature Logger Commands

由 為{幸葍}努か 提交于 2019-12-08 09:36:37
问题 I am coding an Android aplication. I have a SL13A Temperature Data Logger and I am trying to read temperature from the logger, but I don't really know how. Here is the datasheet: http://www.mouser.com/ds/2/588/AMS_SL13A_Datasheet_EN_v4-371531.pdf I am using the Get Temperature Command (command code 0xAD). My code is like that: NfcV nfcvTag = NfcV.get(tag); try { nfcvTag.connect(); } catch (IOException e) { Toast.makeText(getApplicationContext(), "Could not open connection!", Toast.LENGTH

What mobile phones with NFC have full support of Mifare Classic (1K & 4K) cards? [closed]

由 牧云@^-^@ 提交于 2019-12-08 08:12:51
问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . Google has stopped supporting such tags in the latest Nexus 4, but what phones still have possibility of reading\writing Mifare Classic cards? Especially interested in hi-end models with powerful processors. Also could anyone provide some inforamtion on emulating such nfc tags with your phone? Thanks in advance

Using Android phone to locate Zigbee sensor

由 主宰稳场 提交于 2019-12-08 05:25:30
I'd like to tag something important with a ZigBee sensor and be able to know/track its approximate distance (ideally location, but I understand that would take many reference sensors) through my Android cell phone and alert me if it moves out of range. Alternatively, use the cell from to locate RFID tags (I know the exact location isn't possible, but looking for +/- 5-10M). I've been testing these SDIO ZigBee cards for a while: http://www.spectec.com.tw/sdz-539.html Although I haven't still managed to make them work in Android. But to be honest I've pushed the project aside for the last months

Using Android phone to locate Zigbee sensor

由 隐身守侯 提交于 2019-12-08 03:45:28
问题 I'd like to tag something important with a ZigBee sensor and be able to know/track its approximate distance (ideally location, but I understand that would take many reference sensors) through my Android cell phone and alert me if it moves out of range. Alternatively, use the cell from to locate RFID tags (I know the exact location isn't possible, but looking for +/- 5-10M). 回答1: I've been testing these SDIO ZigBee cards for a while: http://www.spectec.com.tw/sdz-539.html Although I haven't

Connecting to the device via zkemkeeper.dll in windows application C# .net

由 断了今生、忘了曾经 提交于 2019-12-08 03:25:53
问题 I'm trying to connecting RFID and bio metrics devices in network, my local ip is 192.168.1.24 and the RFID device ip is 192.168.1.22 , I'm using Visual studio 12 an sample windows application. to connect this device but it throws an error: Unable to connect the device,error code = -201 private void btnConnect_Click(object sender, EventArgs e) { if (txtIP.Text.Trim() == "" || txtPort.Text.Trim() == "") { MessageBox.Show("IP and Port cannot be null", "Error"); return; } int idwErrorCode = 0;

Is the RFID RC522 capable of reading NFC tags?

由 旧时模样 提交于 2019-12-07 17:20:36
问题 I recently purchased the RFID RC522 reader/writer,along with some NFC Mifare classic 1K 13.56mhz tags. The seller on Amazon mentioned that the NFC tags were compatible with the rc522 reader/writer; however, I have not been able scan the tags. I was wondering, is it really possible to scan NFC tags with the RC522 reader/writer? thanks nfc tags RFID RC522 module 回答1: The RC522 operates at 13.56 Mhz which is NFC's frequency, and the spec sheet says it natively supports: mifare1 S50, mifare1 S70

Force PC/SC driver on ACR122U NFC reader

由 假如想象 提交于 2019-12-07 11:41:41
问题 I have trouble with using my ACR122U RFID card reader form ACS. I need to connect it to my Mac using the PC/SC driver. I installed the driver from the ACS website and confirmed that it's running. However, whenever I test using the nfc-list command, I get the following error: nfc-list uses libnfc libnfc-1.7.1-189-g2869ae2 error libnfc.driver.acr122_usb Unable to claim USB interface (Permission denied) nfc-list: ERROR: Unable to open NFC device: acr122_usb:020:002 As far as I've understood from

深入分析RFID与NFC的关系

由 若如初见. 提交于 2019-12-07 11:28:15
这是一个看似简单，但是很让人困惑的问题，即使是在这个行业工作多年，有时也未必能很清楚地表述这两者之间的关联和区别。为了弄清这个问题，我们先从一个简单的图例开起说起 从上图可以非常清晰地看出，两者有很大的差别，同时又有交集。 起源 最早的RFID雏形可以追溯到二战，当时盟军雷达为了有效地进行敌我飞机识别，在雷达上加了一种无线电发射装置，雷达探测到飞机之后给飞机发送一段特定的无线电波，如果是自己的飞机则会回执一段无线电波，雷达接收到之后就可以判定为自己的飞机，如果没有回应则认为是敌方飞机。历经几十年的发展，根据用途的差异现已延伸出很多的频段。作用领域也从最早的单一物体识别延伸到近场支付等场景。 相比RFID来说NFC起步晚很多，大概是2003年前后，PHLIPS、SONY、NOKIA三大IT巨头聚在一块，在原有RFID的基础之上统一了一下并增加了一些特有的东西推出了NFC技术。 RFID分类 RFID的分类方式很多，例如按有源还是无源来分，按能量传递方式来分，本文只为了说清RFID与NFC的关系所以此处只讨论按频段来分。 根据作用领域不同，RFID分很多的频段，从低到高可分为： 1、低频 125K、134K 2、高频 13.56M 3、超高频 900M 4、微波 2.4G、5.8G 当然，这并不是所有的频率，只是我们日常接触得最多的几个而已。 需要注意的是900M、13.56M

How can I Listen for Keyboard input without Text Field Java

由 烈酒焚心 提交于 2019-12-06 19:51:31
I am working on a Java application and interfacing with an RFID reader that acts as a keyboard input device. The application will be used for employee time tracking, so the employee should not see the code that his/her RFID tag contains. Currently, the application opens a jFrame that asks the employee to scan their tag. This is where I would like to listen for the keyboard input. All of the RFID tags are 10 digits, so I would like to use some kind of regex to detect when a card is scanned if possible. If someone could point me in the right direction, or contribute some code I would be grateful
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