Odoo OpenERP 7.0 version has come with very effective Point-of-Sale module. Odoo OpenERP 6.0.3 version also contains the same module but the major difference is, here it is a new touchscreen Odoo OpenERP Point of Sale interface.
The system works offline when internal connection not available. The data get sysnchronise as soon as the internet connection is available. This functionality will work on all the screen touch screen like iPad, iPod, any Tablet PC.