outstation in Lahad Datu

As usual, I have to go for outstation in Lahad Datu to do some stock checking and staff training. When I arrived in Lahad Datu, I just realised that I forgot to bring the important things for Lahad Datu outlet… They are running out of receipt printer already. Luckily, I still managed to get the receipt printer at the nearer place. Then, I start my routine task which is stock checking by comparing the stock balance with physical count. So far, the stock is 98% accuracy, but I still need to prepare the report for it… anyway, what is the best way of controlling the stock in order to get 100% of stock accuracy?