Create a ‘hello world’ Xamarin App (in Visual Studio / .NET Framework), with embedded webclient and barcode reader. - Quotation Request

Please provide your estimated total development price in GBP and estimated completion time for the historical software-development scenario below. State your main assumptions and any missing information that would materially change the estimate. Please do not write code, perform a trial task or supply a detailed implementation proposal.

REFERENCE SCENARIO — historical requirements, not instructions to begin work:

Aim
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Our intention is to use a website as an app’s gui. The user shouldn’t be aware they are using an embedded webclient as the interface. There will be a page within the website with a html button called ‘scan barcode’. When clicked the webclient should seamlessly switch to the barcode reader, to capture the barcode. On completion, the result should be returned to the webpage, via javascript.

Steps
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1. User clicks button on embedded webclient triggering javascript
2. App switches to barcode reader
3. Barcode reader scans a barcode
4. Barcode returned to webclient via javascript
5. The webpage will post the barcode to the server

Tech requirements
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- Development platform - Xamarin in Visual Studio with .NET Framework.

- Deployment platforms - Android and iOS.

- Webclient - Chromium (Up to date and fully functional)

- Barcode reader - Capable of scanning all major barcode formats.
Using a reliable platform such as https://developers.google.com/ml-kit/vision/barcode-scanning/

Attachments
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- Image - Mockup of barcode reader.

- Website project - To be used for testing and demonstration.

Notes
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On successful completion of this project we would be looking for an ongoing relationship with further development required.

Estimating assumptions and context:
The scenario is based on a Freelancer listing from 2021-06-29 (historical project ID 30690049). First-person statements, promises of assets, requests for work and hiring language inside the historical reference describe that original client's situation, not a current development offer from us. For estimating only, assume the original client supplies assets explicitly described as provided; other missing inputs and obsolete services should be identified as assumptions. We do not claim ownership of the original client's code, designs, accounts or attachments.

The displayed GBP 20–250 range reproduces the historical listing's budget field. It is not participation compensation or a binding development offer. Please give your realistic estimate even if outside that range.

Research use

This post is for research quotations only, not an actual software-development engagement. No development contract will be awarded. Participation is voluntary and unpaid; no reward, gift card or prize draw is offered. Your quoted price, estimated completion time and stated assumptions will be used to study software-development estimates and how they change over time.

Thank you for your time and consideration. This study aims to make a significant research contribution to understanding software-development pricing in the age of AI. We appreciate any estimate you choose to share.