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Login into Asp.net Web application with Finerprint using asp.net C# Javascript
I want to login to my asp.net web application using fingerprint. That means I don't want to use any login id and password. I just want to login with my fingerprint. I have got a 3m cogent device and the device works fine but I don't know how to integrate the device with my software. I am using ActiveX. My Javascript code is: I am getting undefined in port.KsMatchretvalue.
Solutions/Answers:
Answer 1:
I am using 3M Cogent CSD 200 model Finger Print reader device
Hope you have SDK already
Below is a little code for this device to capture and match details to allow log in .
Two function here
1.] Capture – to save fingerprint
2.] Match – to match fingetprint at the time of log in
Note : its a code block from my application , you have to made adjustment according to your application
byte[] bTemplateDataOne;
byte[] bTemplateDataTwo;
byte[] isoTemplateBytes;
bool ErroFlag = false;
int nTempltSizeOne;
int nTempltSizeTwo;
MMMCogentCSD200APIs csd200Obj = null;
CSD200Wrapper wr = null;
private void btnCapture_Click(object sender, EventArgs e)
{
try
{
int nRc = -1;
byte[] fpRawBytes = null;
int m_Width = 0, m_Height = 0;
isoTemplateBytes = null;
int nfiq = 0;
pictCaptureImg.Image = null;
pictCaptureImg.Refresh();
if (true == chkbCaptureOnly.Checked)
{
pbClaimed.Image = null;
pbClaimed.Refresh();
bTemplateDataOne = null;
nTempltSizeOne = -1;
bTemplateDataTwo = null;
nTempltSizeTwo = -1;
rbClaimed.Checked = true;
nRc = csd200Obj.captureFP(30000, ref fpRawBytes, ref m_Width, ref m_Height);
if (nRc == CSD200APICodes.SUCCESS && fpRawBytes != null)
{
bmp = CreateGreyscaleBitmap(fpRawBytes, m_Width, m_Height);
pictCaptureImg.Image = bmp;
MessageBox.Show("Fingerprint Capture Successful.");
}
else if (nRc == CSD200APICodes.ERROR_TIMEOUT)
{
MessageBox.Show("Fingerprint Capture Timeout");
}
else
{
MessageBox.Show("Fingerprint Capture Failed. ErrorCode: " + nRc);
}
}
else
{
nRc = csd200Obj.captureFP(30000, ref fpRawBytes, ref m_Width, ref m_Height, ref nfiq, ref isoTemplateBytes);
if (nRc == CSD200APICodes.SUCCESS && fpRawBytes != null)
{
bmp = CreateGreyscaleBitmap(fpRawBytes, m_Width, m_Height);
pictCaptureImg.Image = bmp;
if (rbClaimed.Checked == true)
{
pbClaimed.Image = bmp;
if (isoTemplateBytes != null)
{
bTemplateDataOne = isoTemplateBytes;
nTempltSizeOne = isoTemplateBytes.Length;
}
}
else
{
MessageBox.Show("Try Again , Some error occured");
}
MessageBox.Show("Fingerprint Capture Successful.\n NFIQ: " + nfiq);
}
else if (nRc == CSD200APICodes.ERROR_TIMEOUT)
{
MessageBox.Show("Fingerprint Capture Timeout");
}
else
{
MessageBox.Show("Fingerprint Capture Failed. ErrorCode: " + nRc);
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void btnMatch_Click(object sender, EventArgs e)
{
if (bTemplateDataOne != null )
{
//DataTable dt = new DataTable();
//dt.Columns.Add("value");
//for (int i = 0; i < bTemplateDataOne.Length; i++)
//{
// DataRow dr = dt.NewRow();
// dr["value"] = bTemplateDataOne[i];
// dt.Rows.Add(dr);
//}
bool isMatch = false;
int matched = 0;
int index = 0; ;
string strAppPath = Path.GetDirectoryName(Application.ExecutablePath);
try
{
string result1 = Convert.ToBase64String(bTemplateDataOne, 0, bTemplateDataOne.Length);
string connectionstring = ConfigurationManager.ConnectionStrings["Constr"].ConnectionString.ToString();
SqlConnection con = new SqlConnection(connectionstring);
con.Open();
SqlCommand cmd = new SqlCommand("select Biometric,Name,id from Details ", con);
DataSet ds = new DataSet();
SqlDataAdapter ad = new SqlDataAdapter(cmd);
ad.Fill(ds);
con.Close();
if (ds != null && ds.Tables.Count > 0 && ds.Tables[0].Rows.Count > 0)
{
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
bTemplateDataTwo = null;
bTemplateDataTwo = Convert.FromBase64String(ds.Tables[0].Rows[i][0].ToString());
nTempltSizeTwo = bTemplateDataTwo.Length;
//DataTable dt1 = new DataTable();
//dt1.Columns.Add("value");
//for (int ii = 0; ii < bTemplateDataTwo.Length; ii++)
//{
// DataRow dr = dt1.NewRow();
// dr["value"] = bTemplateDataTwo[ii];
// dt1.Rows.Add(dr);
//}
isMatch = csd200Obj.matchTemplates(bTemplateDataOne, bTemplateDataTwo);
if (isMatch == true)
{
index = i;
matched++;
}
}
if (matched > 0)
{
string msg = "Fingers are Matched." + Environment.NewLine;
msg += "Welcome: " + ds.Tables[0].Rows[index]["Name"];
msg +="( id : " + ds.Tables[0].Rows[index]["id"] + ")" + Environment.NewLine + "matched value : " + matched;
MessageBox.Show(msg);
WriteFMRFile(nTempltSizeOne, bTemplateDataOne, strAppPath + "\\One.fmr");
WriteFMRFile(nTempltSizeTwo, bTemplateDataTwo, strAppPath + "\\Two.fmr");
}
else
{
MessageBox.Show("Not Matched." + Environment.NewLine + "matched value : " + matched);
}
}
else
{
MessageBox.Show("There is no fingerprint saved in the system"+Environment.NewLine+"Register someone first .");
}
}
catch (BioSDK710Exception cgtEx)
{
MessageBox.Show(cgtEx.ShowError(), "CogentBioSDK710 Error");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
//else if(chkbCaptureOnly.Checked == true && (bTemplateDataOne == null || bTemplateDataTwo == null))
else if (chkbCaptureOnly.Checked == true && (bTemplateDataOne == null))
{
MessageBox.Show("Please uncheck 'Capture Only' and recapture.", "Warning");
}
//else if (chkbCaptureOnly.Checked == false && (bTemplateDataOne == null || bTemplateDataTwo == null))
else if (chkbCaptureOnly.Checked == false && (bTemplateDataOne == null))
{
MessageBox.Show("Please capture fingerprints.", "Warning");
}
}
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