mobile computing sw(sadun)

Introduction to Mobile Computing

Introduction to Mobile Computing

Sandun Wijayarathne

mail@thesandun.com

Sandun Wijayarathne

Introduction to Mobile Computing

Overview

• Introduction

• Mobility?

• Features

• Devices

• Limitations

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Introduction to Mobile Computing

Introduction

• Mobile Computing =

–Mobile (moving) +

–Computing (using computer)

• Human-Computer interaction

• Expected to be transported during normal usage

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Introduction to Mobile Computing

Mobility?

• A device that moves between different, – geographical locations – networks – applications – Ex: palmtop, laptop, smart phones etc.

• A device due to which mobile communication is possible –Modems – Ex: Wi-Fi, 3G, 4G LTE, Bluetooth etc.

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Introduction to Mobile Computing

Features

• Mobile, –Hardware

–Software

–Communication

• Enable people to access network services anyplace, anytime, and anywhere (ubiquitous)

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Introduction to Mobile Computing

Devices

• Categories

–Portable computers

–Mobile phones

–Wearable computers

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Introduction to Mobile Computing

Portable Computers

• Compacted, lightweight units

• Mostly including a full character set keyboard

• Software that may be parameterized

• Ex: laptops, notebooks, notepads, etc.

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Introduction to Mobile Computing

Mobile Phones

• Restricted key set

• Primarily intended vocal communications

• But not restricted to it

• Ex: feature-phones, smart phones, phonepads, etc.

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Introduction to Mobile Computing

Wearable Computers

• Worn by the bearer under, with or on top of clothing

• Mostly limited to functional keys

• Primarily intended as incorporation of software agents

• Ex: watches, wristbands, keyless implants, etc.

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Introduction to Mobile Computing

Limitations

• Range & Bandwidth – Slower than direct cable

connections –GPRS and EDGE, and more

recently HSDPA and HSUPA 3G and 4G LTE

–Available within range of commercial cell phone towers

–Hi-speed LANs are inexpensive but have very limited range

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Introduction to Mobile Computing

Limitations

• Security standards –Dependent on public networks,

requiring careful use of VPN

– Security is a major concern while concerning the mobile computing standards on the fleet

– Can easily attack the VPN through a huge number of networks interconnected through the line

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Introduction to Mobile Computing

Limitations

• Application-Based Threats

– Ex: Malware, Spyware, Privacy, Malicious apps etc.

• Web-based Threats

– Ex: Phishing, Drive-by downloads, Browser exploits etc.

• Network Threats

– Ex: Network exploits, Wi-Fi sniffing etc.

• Physical Threats

– Ex: Lost or stolen devices etc.

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Introduction to Mobile Computing

Limitations

• Security and privacy solutions

–Enforced password protection

–Encryption

–Secure web browsing

–Secure internet transactions

–Firewalls, Virus guard software

–Etc.

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Introduction to Mobile Computing

Limitations

• Power consumption

–Rely entirely on battery power

–Compact size means unusually expensive batteries must be used to obtain the necessary battery life

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Introduction to Mobile Computing

Limitations

• Transmission interferences –Weather, terrain, and the

range from the nearest signal point can all interfere with signal reception

–Reception in tunnels, some buildings, and rural areas is often poor

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Introduction to Mobile Computing

Limitations

• Potential health hazards –Use mobile devices while

driving are often distracted from driving and more likely to be involved in traffic accidents

–May interfere with sensitive medical devices

–Mobile phone radiation and health?

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Introduction to Mobile Computing

Limitations

• Human interface with device

–Small screens and keyboards means hard to use

–Alternate input methods require training

• speech recognition

• handwriting recognition

• Gestures

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Introduction to Mobile Computing

Questions?

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Introduction to Mobile Computing

Thank You!

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