Pdas handheld devices internet for census data collection
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PDAs-Handheld Devices/Internet for Census Data Collection. Overview of the Presentation. Challenges with Paper-based Data Collection and Processing Moving to PDA/Handheld-based Data Collection and Processing PDAs: Key Features/Other Optional Features Internet-based Census Data Collection

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Pdas handheld devices internet for census data collection

PDAs-Handheld Devices/Internet for Census Data Collection

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Overview of the presentation

Overview of the Presentation

  • Challenges with Paper-based Data Collection and Processing

  • Moving to PDA/Handheld-based Data Collection and Processing

  • PDAs: Key Features/Other Optional Features

  • Internet-based Census Data Collection

  • Benefits/Issues

  • Recommendations - Conclusions

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Paper based data collection

Paper-based Data Collection

Paper-and-Pencil Interviewing

Handheld devices

Paper-based

Data Collection

Self-administrated Questionnaire

Internet

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Challenges with paper based data collection processing

Challenges with Paper-based Data Collection/ Processing

  • Slow and time-consuming

  • Re-keying information is inefficient and increases chance of error

  • Paper-based forms increase chance of error

  • Submitting multiple forms for a single process

  • Cannot capture value-added data – GIS

  • Data Integrity and Authenticity

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Pda and handheld computer

PDA and Handheld Computer

  • Personal digital assistant:

    • “A personal digital assistant (PDA) is a handheld computer, also known as small or palmtop computers.” (Wikipedia)

  • PDA vs Handheld computer:

    • Handheld computer offers more features than a PDA (larger than a PDA; smaller than a Laptop!)

    • Used interchangeably

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Paper based approach vs pda s approach

Paper-based Approach vs PDA’s Approach

Data Collection

Data Entry

Data Coding/Editing

Paper-based Approach

Manual

  • Key entry/computer-assisted

  • OMR/OCR/ICR

Manual

Computer-assisted

Data Coding/Editing

(partial)

Data Collection/Entry/Coding/Editing

Automated/built-in

Manual

Computer-assisted

PDA ‘s Approach

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Pda way of functioning

PDA: Way of Functioning

  • Simultaneously data entering and data coding

  • Possibility to enter data in two ways: with selection from the offered list of answers (or from classification in hierarchical order ) or with typing a text

  • The next question could not be answered if the current one is not answered

  • To have report of enumerated units (cumulative) in each moment

  • To measure the time needed for enumeration of each separate enumeration unit

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Pdas key features

PDAs - Key Features

  • Works like a “Pocket Computer”

    • Processor, RAM, ROM, Operating System

    • Applications can we loaded on the device

    • Device has processing power

  • Increases Productivity “on the move”

    • Data can be collected in digital format in the field

    • Data can be directly uploaded into the server

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Pdas handheld devices internet for census data collection

Cont…

  • Connectivity Options

    • Data connectivity using GPRS /CDMA

    • Data Connectivity options using Wi-Fi (Wireless)

    • Data can be transferred by “syncing” with Computer: wired connectivity via USB cable (PDAs connect to computer)

  • Enhanced data storage

    • Increase storage capacity through add on SD cards

  • Optional features

    • Camera, Biometric, GPS, Add on Smart Card reader etc

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Two types of handheld devices

Two Types of Handheld devices:

  • Pen Based

    • Pocket PC’s

      • Stylus based input

      • Data transfer through “sync”

  • Converged

    • Pocket PC with Connectivity

      • Connected via GPRS / CDMA

      • Options of Camera, GPS

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Pdas handheld devices internet for census data collection

Using PDA with data sync option

Option 1

Sync and transfer data

Collect data in the field

Option 2

Using PDA inbuilt GPRS capability

Collect data in the field

Send data via Inbuilt GPRS

Option 3

Using PDA in connection with Bluetooth Phone / connected cable

Collect data in the field

Send data via phone

Three forms of data transfer(from HP)

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Selection criteria

Selection Criteria:

  • Data Input Method

    • Stylus, On device keyboard, Off Device Keyboard

  • Memory capacity

    • RAM:64-128 MB

    • ROM: Inbuilt ROM, Additional ROM via SD Card

  • Connectivity Options

    • Sync through computer, In-built GPRS/CDMA, Wi-Fi, Bluetooth

  • Ruggedness

  • Regional Language Support

    • Arabic, English plus additional languages

  • Other Options

    • GPS, Camera, etc.

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Other decision making criteria

Other Decision Making Criteria:

  • Real time data upload Vs Batch data upload

  • Recurring costs for data connectivity

  • Ease of data entry/Ease of holding device in one hand

  • Battery Life / Battery Charging Options

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Managing devices in the field some considerations

Managing devices in the field: Some Considerations

  • How do we manage the devices in the field?

  • Data security?

  • Device security?

  • Application version on device?

  • Troubleshooting on device?

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Measures for data protection

Measures for data protection

  • Ensure protection from:

    • Loosing of already entered records

    • Ex-post data correction in entered records

    • Unauthorized using of data

  • Measures:

    • Biometric Security

    • Security for Wireless and GPRS

    • Encrypting Data

    • Make it “solid” (rugged?)

    • Make it “ugly”!

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Optional features

Optional Features

  • The device can be enabled with GPS to:

    • geo-reference units visited (urban and rural)

    • track location of data entry

    • Positioning and guidance of the enumerator

  • With Cellular, camera and OS applications

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Pdas costs

PDAs Costs

  • Pocket PCs:

    • $300-$1200

  • Cost dependent on

    • User Interface

    • Upgrading

  • Economy of scale

  • Deployment issues

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Summary of key features

Summary of Key Features

  • Integrated field platforms with GPS, cellular, camera and OS applications

  • Real-time task management from office

  • Manage field time, expenses, etc.

  • Geographical and map processing

  • Data synchronization and management

  • Secure applications, procedures and protocols

  • Ability to encrypt data for secure transmission

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Self administrated questionnaire

Self-administrated Questionnaire

Paper-and-Pencil Interviewing

Handheld devices

Paper-based

Data Collection

Self-administrated Questionnaire

Internet

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Internet based census data collection ecensus

Internet-based Census Data Collection (eCensus)

  • Why?

    • Requested by the population (e.g. France)

    • E-Government Policy (e.g. Canada)

  • Some benefits

    • Accurate and timely data collection

    • Processing time reduced

    • Rapid availability of clean data for statistical analysis

    • Enhanced analytics

    • Reuse and consumption by multiple Departments

    • Enhanced Efficiency: eliminating layers, reducing staff and costs

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Example canada experience

Example: Canada Experience

  • Government On-Line (GOL) initiative

  • Census 2006:

    • 73% Mail-out via Canada Post

    • Development and integration of Internet application and processing was outsourced to private sector

    • Target: 20% of initial response from the Internet

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Example european census organization pilot for 2011

Example: European Census Organization Pilot for 2011

  • The pilot includes two key aspects:

  • eCensus (census online) and

  • Handheld devices.

  • They want to equip census takers with hand-held devices to update addresses nationwide, and for non-response follow up or to input information during a canvass of homes whose residents fail to submit paper census surveys.

  • From “RGI Conference on Technology Options”, IBM

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Recommendations for the use of pdas

Recommendations for the use of PDAs

  • Think Integration – People, Process, Technology

  • Build Partnership with:

    • Application development partner

    • Device Manufacturer

    • Connectivity provider

    • Capacity building supporter

  • Nodal Agency:

    • Operationalize the whole process

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Summary conclusions

Summary-Conclusions

  • The qualitative as well as quantitative benefits of handheld devices have been proven in field in many countries (Australia, Canada, Brazil, Malaysia, New Zealand, etc…)

  • Various Options are available for selecting handheld devices

  • Clear identification of objective is required for selecting best device

  • Important to have extensive training prior to deployment

  • Post implementation support – technical as well as hardware support ensures project success

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


Pdas handheld devices internet for census data collection

Thank You

UNSD-UNESCAP Regional Workshop on Census Data Processing: Contemporary technologies for data capture, methodology and practice of data editing, documentation and archiving

Bangkok, Thailand, 15-19 September 2008


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