> For the complete documentation index, see [llms.txt](https://developer.magtek.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.magtek.com/hardware/card-readers/mms-dyna-devices/dynaflex-ii-go/documents/user-manuals/magneflex-browser-developer-tool-programmers-reference-web-api/magneflex-browser-web-api-resources/requestcardswipe.md).

# requestCardSwipe

This query string instructs the device to prompt for a card swipe.

```
?operation= 
&httpMethod= 
&closeDeviceAfter= 
&readerArgument= 
&destinationURL= 
&requestLocation= 
&passInData=
```

<table data-header-hidden><thead><tr><th width="165.81817626953125" valign="top"></th><th valign="top"></th></tr></thead><tbody><tr><td valign="top">Parameter</td><td valign="top">Description</td></tr><tr><td valign="top">operation</td><td valign="top"><p>Operation to request from MagneFlex. Use:</p><p>requestCardSwipe</p></td></tr><tr><td valign="top">httpMethod</td><td valign="top"><p>HTTP method to be used for the HTTP postback from MagneFlex. Use:</p><p>GET - returns the response data in the form of a query string. POST – recommended for EVM related transactions to accommodate limits on query string lengths.</p></td></tr><tr><td valign="top">closeDeviceAfter</td><td valign="top"><p>Flag to close the device after the request. Use:</p><p>true – close device</p><p>false – do not close the device</p></td></tr><tr><td valign="top">readerArgument</td><td valign="top">Comma delimited list of arguments to be passed to MagneFlex. requestCardSwipe requires no arguments.</td></tr><tr><td valign="top">destinationURL</td><td valign="top">MagneFlex will send the postback to this URL.</td></tr><tr><td valign="top">requestLocation</td><td valign="top"><p>Flag to send GPS location of the device from which Magneflex (iOS only) is hosted.</p><p>Use:</p><p>true – send location</p><p>false – do not send location</p></td></tr><tr><td valign="top">passInData</td><td valign="top">Optional data to send to MagneFlex. This data will be passed back to the web application.</td></tr></tbody></table>

Each input parameter supplied in the request is delimited by an ampersand character ‘&’, and the value for a parameter begins after an equal character ‘=’. Where ever a parameter contains multiple values, each are delimited by a comma character ‘,’.

**Example query:**

```
https://192.168.10.100/magneflexdemo/default.aspx? 
operation=requestCardSwipe
&httpMethod=GET
&closeDeviceAfter=true
&readerArgument= 
&destinationURL=https://192.168.10.100/magneflexdemo/cardpostback.aspx 
&requestLocation=false
&passInData=

```

**Return Value:**

The CardSwipe output in TVL format.

<table data-header-hidden><thead><tr><th width="138.54547119140625" valign="top"></th><th valign="top"></th></tr></thead><tbody><tr><td valign="top">Parameter</td><td valign="top">Description</td></tr><tr><td valign="top">errorCode</td><td valign="top">Error status. 0 is Success. Non-Zero is an error.</td></tr><tr><td valign="top">errorMessage</td><td valign="top">Description of the errorCode.</td></tr><tr><td valign="top">opType</td><td valign="top"><p>The type of operation. For this command the value is:</p><p>CARD_SWIPE_RESULT</p></td></tr><tr><td valign="top">cardDataIn</td><td valign="top"><p>Magnetic swipe card data in TLV format.</p><p>FA (Container for generic data) DFDF25 (Device serial number)</p><p>F4 (Container for Encrypted MSR data) DFDF30 (Masked T1 status) DFDF31 (Masked T1)</p><p>DFDF32 (Masked T2 status) DFDF33 (Masked T2)</p><p>DFDF34 (Masked T3 status) DFDF35 (Masked T3)</p><p>DFDF37 (Encrypted T1) DFDF39 (Encrypted T2) DFDF3B (Encrypted T3)</p><p>DFDF3C (Encrypted MagnePrint) DFDF43 (MagnePrint Status) DFDF50 (MSR KSN)</p></td></tr><tr><td valign="top">passInData</td><td valign="top">Optional data to send to MagneFlex. This data will be passed back to the web app.</td></tr></tbody></table>

**Example:**&#x20;

```
https://192.168.10.100/magneflexdemo/cardpostback.aspx?errorCode=0&errorMessage=OK&opType=CARD_SWIPE_RESULT&cardDataIn=FA820178DFDF250F42324 6363045413036313731364141F4820161DFDF300100DFDF314A2542353535353030303
032303030343434345E4D4153544552434152442F4155544F4D4154494F4E495E31383
0363230313030303030303030303030303030303030303030303030303FDFDF320100D 
FDF33263B353535353030303032303030343434343D313830363230313030303030303 
030303030303FDFDF340100DFDF3500DFDF3750A7803ECF28219BB1C955D7A88FC281B 
A663BE8590491D04FD7FD33BEAEB0B7ADD52B0FC39EEED677408FA65D68B5130D230EB 
99B769D05EE42AF6CE5FF09E335E2C8686D9C95FEB6D957771BEA899CDEDFDF3928112
1CC637D0F5921D8ED05FDCAE436C93384BC949C12FC85F34C29E3951A85D797765959D
44514F0DFDF3B00DFDF3C383B61305D74C5B8FD39A3F9D7733F5F435F173ADE58897A4
07D4ED41D1F84BA7F2EA091D035B2990A0722C193F64BF1E7AD038BD3C0690D81DFDF4
30461401000DFDF500A9010010B2F60EA0001B9&passInData=
```


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